20023895264 has 48 divisors (see below), whose sum is σ = 41776505568. Its totient is φ = 9414991872.

The previous prime is 20023895239. The next prime is 20023895279. The reversal of 20023895264 is 46259832002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650264 + ... + 680360.

It is an arithmetic number, because the mean of its divisors is an integer number (870343866).

Almost surely, 2^20023895264 is an apocalyptic number.

It is an amenable number.

20023895264 is an abundant number, since it is smaller than the sum of its proper divisors (21752610304).

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

20023895264 is a wasteful number, since it uses less digits than its factorization.

20023895264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31347 (or 31339 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20023895264 in words is "twenty billion, twenty-three million, eight hundred ninety-five thousand, two hundred sixty-four".