20399941164 has 12 divisors (see below), whose sum is σ = 47599862744. Its totient is φ = 6799980384.

The previous prime is 20399941139. The next prime is 20399941187. The reversal of 20399941164 is 46114999302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 849997537 + ... + 849997560.

Almost surely, 2^20399941164 is an apocalyptic number.

It is an amenable number.

20399941164 is an abundant number, since it is smaller than the sum of its proper divisors (27199921580).

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

20399941164 is a wasteful number, since it uses less digits than its factorization.

20399941164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699995104 (or 1699995102 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 20399941164 in words is "twenty billion, three hundred ninety-nine million, nine hundred forty-one thousand, one hundred sixty-four".