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12909682080 = 2532573127967
BaseRepresentation
bin11000000010111101…
…00001110110100000
31020022200211210120100
430001132201312200
5202414334311310
65533003142400
7634625326041
oct140136416640
936280753510
1012909682080
1155251a7249
122603514a00
1312a976b149
148a67788c8
15508560ec0
hex3017a1da0

12909682080 has 288 divisors, whose sum is σ = 45055954944. Its totient is φ = 3365203968.

The previous prime is 12909682001. The next prime is 12909682081. The reversal of 12909682080 is 8028690921.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12909682081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13349757 + ... + 13350723.

It is an arithmetic number, because the mean of its divisors is an integer number (156444288).

Almost surely, 212909682080 is an apocalyptic number.

12909682080 is a gapful number since it is divisible by the number (10) 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 12909682080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22527977472).

12909682080 is an abundant number, since it is smaller than the sum of its proper divisors (32146272864).

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

12909682080 is a wasteful number, since it uses less digits than its factorization.

12909682080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 12909682080 in words is "twelve billion, nine hundred nine million, six hundred eighty-two thousand, eighty".