20568858572 has 6 divisors (see below), whose sum is σ = 35995502508. Its totient is φ = 10284429284.

The previous prime is 20568858517. The next prime is 20568858587. The reversal of 20568858572 is 27585886502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571107318 + ... + 2571107325.

It is an arithmetic number, because the mean of its divisors is an integer number (5999250418).

Almost surely, 2^20568858572 is an apocalyptic number.

It is an amenable number.

20568858572 is a deficient number, since it is larger than the sum of its proper divisors (15426643936).

20568858572 is a wasteful number, since it uses less digits than its factorization.

20568858572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142214647 (or 5142214645 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 56.

The spelling of 20568858572 in words is "twenty billion, five hundred sixty-eight million, eight hundred fifty-eight thousand, five hundred seventy-two".