20311164120056 has 16 divisors (see below), whose sum is σ = 38728914636600. Its totient is φ = 9983453550304.

The previous prime is 20311164120031. The next prime is 20311164120059. The reversal of 20311164120056 is 65002146111302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311164120059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21516063215 + ... + 21516064158.

Almost surely, 2^{20311164120056} is an apocalyptic number.

It is an amenable number.

20311164120056 is a deficient number, since it is larger than the sum of its proper divisors (18417750516544).

20311164120056 is a wasteful number, since it uses less digits than its factorization.

20311164120056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43032127438 (or 43032127434 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 20311164120056 in words is "twenty trillion, three hundred eleven billion, one hundred sixty-four million, one hundred twenty thousand, fifty-six".