20120533565216 has 96 divisors (see below), whose sum is σ = 46652482396800. Its totient is φ = 8537708256000.

The previous prime is 20120533565179. The next prime is 20120533565227. The reversal of 20120533565216 is 61256533502102.

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, 7966370 + ... + 10183521.

It is an arithmetic number, because the mean of its divisors is an integer number (485963358300).

Almost surely, 2^{20120533565216} is an apocalyptic number.

It is an amenable number.

20120533565216 is an abundant number, since it is smaller than the sum of its proper divisors (26531948831584).

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

20120533565216 is a wasteful number, since it uses less digits than its factorization.

20120533565216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18150023 (or 18150001 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 20120533565216 in words is "twenty trillion, one hundred twenty billion, five hundred thirty-three million, five hundred sixty-five thousand, two hundred sixteen".