20856632050 has 12 divisors (see below), whose sum is σ = 38793335706. Its totient is φ = 8342652800.

The previous prime is 20856632039. The next prime is 20856632081. The reversal of 20856632050 is 5023665802.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15004535049 + 5852097001 = 122493^2 + 76499^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208566271 + ... + 208566370.

Almost surely, 2^20856632050 is an apocalyptic number.

20856632050 is a deficient number, since it is larger than the sum of its proper divisors (17936703656).

20856632050 is a wasteful number, since it uses less digits than its factorization.

20856632050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417132653 (or 417132648 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 20856632050 in words is "twenty billion, eight hundred fifty-six million, six hundred thirty-two thousand, fifty".