2156657626012 has 12 divisors (see below), whose sum is σ = 3779257956040. Its totient is φ = 1076869638576.

The previous prime is 2156657626001. The next prime is 2156657626073. The reversal of 2156657626012 is 2106267566512.

It is a congruent number.

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, 364790283 + ... + 364796194.

Almost surely, 2^{2156657626012} is an apocalyptic number.

It is an amenable number.

2156657626012 is a deficient number, since it is larger than the sum of its proper divisors (1622600330028).

2156657626012 is a wasteful number, since it uses less digits than its factorization.

2156657626012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729587220 (or 729587218 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 2156657626012 in words is "two trillion, one hundred fifty-six billion, six hundred fifty-seven million, six hundred twenty-six thousand, twelve".