12909054156 has 12 divisors (see below), whose sum is σ = 30121126392. Its totient is φ = 4303018048.

The previous prime is 12909054149. The next prime is 12909054167. The reversal of 12909054156 is 65145090921.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537877245 + ... + 537877268.

It is an arithmetic number, because the mean of its divisors is an integer number (2510093866).

Almost surely, 2^12909054156 is an apocalyptic number.

It is an amenable number.

12909054156 is an abundant number, since it is smaller than the sum of its proper divisors (17212072236).

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

12909054156 is a wasteful number, since it uses less digits than its factorization.

12909054156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075754520 (or 1075754518 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 12909054156 in words is "twelve billion, nine hundred nine million, fifty-four thousand, one hundred fifty-six".