20569540952 has 16 divisors (see below), whose sum is σ = 38679041160. Its totient is φ = 10255129984.

The previous prime is 20569540919. The next prime is 20569540963. The reversal of 20569540952 is 25904596502.

It is a junction number, because it is equal to n+sod(n) for n = 20569540897 and 20569540906.

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 3 ways as a sum of consecutive naturals, for example, 3702113 + ... + 3707664.

Almost surely, 2^20569540952 is an apocalyptic number.

It is an amenable number.

20569540952 is a deficient number, since it is larger than the sum of its proper divisors (18109500208).

20569540952 is a wasteful number, since it uses less digits than its factorization.

20569540952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410130 (or 7410126 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 20569540952 in words is "twenty billion, five hundred sixty-nine million, five hundred forty thousand, nine hundred fifty-two".