20310345504 has 36 divisors (see below), whose sum is σ = 57757545846. Its totient is φ = 6770115072.

The previous prime is 20310345479. The next prime is 20310345511. The reversal of 20310345504 is 40554301302.

20310345504 is a `hidden beast` number, since 2 + 0 + 3 + 103 + 4 + 550 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11739289104 + 8571056400 = 108348^2 + 92580^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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, 35260729 + ... + 35261304.

Almost surely, 2^20310345504 is an apocalyptic number.

20310345504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20310345504 is an abundant number, since it is smaller than the sum of its proper divisors (37447200342).

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

20310345504 is a wasteful number, since it uses less digits than its factorization.

20310345504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70522049 (or 70522038 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20310345504 its reverse (40554301302), we get a palindrome (60864646806).

The spelling of 20310345504 in words is "twenty billion, three hundred ten million, three hundred forty-five thousand, five hundred four".