12912537900 has 36 divisors (see below), whose sum is σ = 37360277192. Its totient is φ = 3443343360.

The previous prime is 12912537881. The next prime is 12912537917. The reversal of 12912537900 is 973521921.

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, 21520597 + ... + 21521196.

Almost surely, 2^12912537900 is an apocalyptic number.

12912537900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12912537900 is an abundant number, since it is smaller than the sum of its proper divisors (24447739292).

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

12912537900 is a wasteful number, since it uses less digits than its factorization.

12912537900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43041810 (or 43041803 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The spelling of 12912537900 in words is "twelve billion, nine hundred twelve million, five hundred thirty-seven thousand, nine hundred".