20271936716872 has 64 divisors (see below), whose sum is σ = 38464241760000. Its totient is φ = 10015616894976.

The previous prime is 20271936716827. The next prime is 20271936716881. The reversal of 20271936716872 is 27861763917202.

It is a self number, because there is not a number n which added to its sum of digits gives 20271936716872.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300126688 + ... + 300194224.

It is an arithmetic number, because the mean of its divisors is an integer number (601003777500).

Almost surely, 2^{20271936716872} is an apocalyptic number.

It is an amenable number.

20271936716872 is a deficient number, since it is larger than the sum of its proper divisors (18192305043128).

20271936716872 is a wasteful number, since it uses less digits than its factorization.

20271936716872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69038 (or 69034 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 20271936716872 in words is "twenty trillion, two hundred seventy-one billion, nine hundred thirty-six million, seven hundred sixteen thousand, eight hundred seventy-two".