11657156272 has 20 divisors (see below), whose sum is σ = 22587417160. Its totient is φ = 5828145408.

The previous prime is 11657156267. The next prime is 11657156333. The reversal of 11657156272 is 27265175611.

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, 391048 + ... + 419800.

It is an arithmetic number, because the mean of its divisors is an integer number (1129370858).

Almost surely, 2^11657156272 is an apocalyptic number.

It is an amenable number.

11657156272 is a deficient number, since it is larger than the sum of its proper divisors (10930260888).

11657156272 is a wasteful number, since it uses less digits than its factorization.

11657156272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54100 (or 54094 counting only the distinct ones).

The product of its digits is 176400, while the sum is 43.

The spelling of 11657156272 in words is "eleven billion, six hundred fifty-seven million, one hundred fifty-six thousand, two hundred seventy-two".