20046656664 has 96 divisors (see below), whose sum is σ = 58481280000. Its totient is φ = 6185488320.

The previous prime is 20046656639. The next prime is 20046656681. The reversal of 20046656664 is 46665664002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143914 + ... + 246585.

It is an arithmetic number, because the mean of its divisors is an integer number (609180000).

Almost surely, 2^20046656664 is an apocalyptic number.

20046656664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20046656664 is an abundant number, since it is smaller than the sum of its proper divisors (38434623336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20046656664 is a wasteful number, since it uses less digits than its factorization.

20046656664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390565 (or 390558 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 20046656664 in words is "twenty billion, forty-six million, six hundred fifty-six thousand, six hundred sixty-four".