20011532056 has 16 divisors (see below), whose sum is σ = 37523140200. Its totient is φ = 10005361344.

The previous prime is 20011532039. The next prime is 20011532063. The reversal of 20011532056 is 65023511002.

It is a super-2 number, since 2×20011532056² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20011532056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314940 + ... + 373108.

Almost surely, 2^20011532056 is an apocalyptic number.

It is an amenable number.

20011532056 is a deficient number, since it is larger than the sum of its proper divisors (17511608144).

20011532056 is a wasteful number, since it uses less digits than its factorization.

20011532056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101178 (or 101174 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 20011532056 in words is "twenty billion, eleven million, five hundred thirty-two thousand, fifty-six".