2156657626000 has 80 divisors (see below), whose sum is σ = 5226899528448. Its totient is φ = 860661168000.

The previous prime is 2156657625931. The next prime is 2156657626001. The reversal of 2156657626000 is 6267566512.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (2156657626001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388962 + ... + 2112961.

Almost surely, 2^{2156657626000} is an apocalyptic number.

2156657626000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156657626000 is an abundant number, since it is smaller than the sum of its proper divisors (3070241902448).

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

2156657626000 is a wasteful number, since it uses less digits than its factorization.

2156657626000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502377 (or 2502361 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 2156657626000 in words is "two trillion, one hundred fifty-six billion, six hundred fifty-seven million, six hundred twenty-six thousand".