20630442504664 has 16 divisors (see below), whose sum is σ = 39625545055320. Its totient is φ = 10063630489920.

The previous prime is 20630442504643. The next prime is 20630442504671. The reversal of 20630442504664 is 46640524403602.

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, 31448844954 + ... + 31448845609.

Almost surely, 2^{20630442504664} is an apocalyptic number.

It is an amenable number.

20630442504664 is a deficient number, since it is larger than the sum of its proper divisors (18995102550656).

20630442504664 is a wasteful number, since it uses less digits than its factorization.

20630442504664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62897690610 (or 62897690606 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 46.

The spelling of 20630442504664 in words is "twenty trillion, six hundred thirty billion, four hundred forty-two million, five hundred four thousand, six hundred sixty-four".