20564632462 has 16 divisors (see below), whose sum is σ = 34112194992. Its totient is φ = 9219510720.

The previous prime is 20564632391. The next prime is 20564632513. The reversal of 20564632462 is 26423646502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400833 + ... + 6404044.

It is an arithmetic number, because the mean of its divisors is an integer number (2132012187).

Almost surely, 2^20564632462 is an apocalyptic number.

20564632462 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20564632462 is a deficient number, since it is larger than the sum of its proper divisors (13547562530).

20564632462 is a wasteful number, since it uses less digits than its factorization.

20564632462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804963.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 20564632462 in words is "twenty billion, five hundred sixty-four million, six hundred thirty-two thousand, four hundred sixty-two".