20568423072 has 96 divisors (see below), whose sum is σ = 58282519680. Its totient is φ = 6331888640.

The previous prime is 20568423023. The next prime is 20568423163. The reversal of 20568423072 is 27032486502.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-4 number, since 4×20568423072⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20568423072.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96579 + ... + 224642.

It is an arithmetic number, because the mean of its divisors is an integer number (607109580).

Almost surely, 2^20568423072 is an apocalyptic number.

It is an amenable number.

20568423072 is an abundant number, since it is smaller than the sum of its proper divisors (37714096608).

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

20568423072 is a wasteful number, since it uses less digits than its factorization.

20568423072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321286 (or 321278 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 20568423072 in words is "twenty billion, five hundred sixty-eight million, four hundred twenty-three thousand, seventy-two".