12971845026 has 48 divisors (see below), whose sum is σ = 33517321344. Its totient is φ = 3545099712.

The previous prime is 12971844989. The next prime is 12971845067. The reversal of 12971845026 is 62054817921.

12971845026 is a `hidden beast` number, since 129 + 7 + 18 + 4 + 502 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2235171 + ... + 2240966.

It is an arithmetic number, because the mean of its divisors is an integer number (698277528).

Almost surely, 2^12971845026 is an apocalyptic number.

12971845026 is an abundant number, since it is smaller than the sum of its proper divisors (20545476318).

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

12971845026 is a wasteful number, since it uses less digits than its factorization.

12971845026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476175 (or 4476172 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 12971845026 in words is "twelve billion, nine hundred seventy-one million, eight hundred forty-five thousand, twenty-six".