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69688489080 = 2335792989303
BaseRepresentation
bin100000011100111000…
…0011111010001111000
320122212201012001020010
41000321300133101320
52120210223122310
652003042101520
75014642245360
oct1007160372170
9218781161203
1069688489080
1127611376331
121160a64a8a0
136757a49372
1435314c79a0
151c2d0cb320
hex1039c1f478

69688489080 has 128 divisors (see below), whose sum is σ = 239191833600. Its totient is φ = 15911473152.

The previous prime is 69688489043. The next prime is 69688489081. The reversal of 69688489080 is 8098488696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69688489081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735709 + ... + 825011.

It is an arithmetic number, because the mean of its divisors is an integer number (1868686200).

Almost surely, 269688489080 is an apocalyptic number.

69688489080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69688489080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119595916800).

69688489080 is an abundant number, since it is smaller than the sum of its proper divisors (169503344520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69688489080 is a wasteful number, since it uses less digits than its factorization.

69688489080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90253 (or 90249 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 66.

The spelling of 69688489080 in words is "sixty-nine billion, six hundred eighty-eight million, four hundred eighty-nine thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 929 1858 2787 3716 4645 5574 6503 7432 9290 11148 13006 13935 18580 19509 22296 26012 27870 32515 37160 39018 52024 55740 65030 78036 89303 97545 111480 130060 156072 178606 195090 260120 267909 357212 390180 446515 535818 625121 714424 780360 893030 1071636 1250242 1339545 1786060 1875363 2143272 2500484 2679090 3125605 3572120 3750726 5000968 5358180 6251210 7501452 9376815 10716360 12502420 15002904 18753630 25004840 37507260 75014520 82962487 165924974 248887461 331849948 414812435 497774922 580737409 663699896 829624870 995549844 1161474818 1244437305 1659249740 1742212227 1991099688 2322949636 2488874610 2903687045 3318499480 3484424454 4645899272 4977749220 5807374090 6968848908 8711061135 9955498440 11614748180 13937697816 17422122270 23229496360 34844244540 69688489080