20264545968 has 40 divisors (see below), whose sum is σ = 54626170368. Its totient is φ = 6461159232.

The previous prime is 20264545949. The next prime is 20264545997. The reversal of 20264545968 is 86954546202.

It is a self number, because there is not a number n which added to its sum of digits gives 20264545968.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9176680 + ... + 9178887.

Almost surely, 2^20264545968 is an apocalyptic number.

It is an amenable number.

20264545968 is an abundant number, since it is smaller than the sum of its proper divisors (34361624400).

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

20264545968 is a wasteful number, since it uses less digits than its factorization.

20264545968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18355601 (or 18355595 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 20264545968 in words is "twenty billion, two hundred sixty-four million, five hundred forty-five thousand, nine hundred sixty-eight".