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869458854968 = 231153431432527
BaseRepresentation
bin11001010011011111100…
…10010100010000111000
310002010020002020011102122
430221233302110100320
5103221122431324333
61503231320420412
7116550000220244
oct14515762242070
93063202204378
10869458854968
1130580a947570
12120610017708
1363cb3264162
1430121155424
151793b15d798
hexca6fc94438

869458854968 has 64 divisors (see below), whose sum is σ = 1816202373120. Its totient is φ = 386851254400.

The previous prime is 869458854967. The next prime is 869458854997.

869458854968 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 869458854892 and 869458854901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869458854967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1793921 + ... + 2226447.

It is an arithmetic number, because the mean of its divisors is an integer number (28378162080).

Almost surely, 2869458854968 is an apocalyptic number.

869458854968 is a gapful number since it is divisible by the number (88) 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 869458854968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908101186560).

869458854968 is an abundant number, since it is smaller than the sum of its proper divisors (946743518152).

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

869458854968 is a wasteful number, since it uses less digits than its factorization.

869458854968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433028 (or 433024 counting only the distinct ones).

The product of its digits is 4777574400, while the sum is 80.

The spelling of 869458854968 in words is "eight hundred sixty-nine billion, four hundred fifty-eight million, eight hundred fifty-four thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 11 22 44 53 88 106 212 424 431 583 862 1166 1724 2332 3448 4664 4741 9482 18964 22843 37928 45686 91372 182744 251273 432527 502546 865054 1005092 1730108 2010184 3460216 4757797 9515594 19031188 22923931 38062376 45847862 91695724 183391448 186419137 252163241 372838274 504326482 745676548 1008652964 1491353096 2017305928 2050610507 4101221014 8202442028 9880214261 16404884056 19760428522 39520857044 79041714088 108682356871 217364713742 434729427484 869458854968