12975092640 has 72 divisors (see below), whose sum is σ = 44277508548. Its totient is φ = 3460024320.

The previous prime is 12975092561. The next prime is 12975092659. The reversal of 12975092640 is 4629057921.

12975092640 is a `hidden beast` number, since 12 + 97 + 509 + 2 + 6 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12645452304 + 329640336 = 112452^2 + 18156^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4503801 + ... + 4506680.

Almost surely, 2^12975092640 is an apocalyptic number.

12975092640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12975092640 is an abundant number, since it is smaller than the sum of its proper divisors (31302415908).

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

12975092640 is a wasteful number, since it uses less digits than its factorization.

12975092640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9010502 (or 9010491 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 12975092640 in words is "twelve billion, nine hundred seventy-five million, ninety-two thousand, six hundred forty".