12640926360 has 64 divisors (see below), whose sum is σ = 38729664000. Its totient is φ = 3299190656.

The previous prime is 12640926341. The next prime is 12640926371. The reversal of 12640926360 is 6362904621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115010 + ... + 1126289.

It is an arithmetic number, because the mean of its divisors is an integer number (605151000).

Almost surely, 2^12640926360 is an apocalyptic number.

12640926360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12640926360 is an abundant number, since it is smaller than the sum of its proper divisors (26088737640).

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

12640926360 is a wasteful number, since it uses less digits than its factorization.

12640926360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241360 (or 2241356 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 12640926360 in words is "twelve billion, six hundred forty million, nine hundred twenty-six thousand, three hundred sixty".