20613364704 has 120 divisors (see below), whose sum is σ = 63259313040. Its totient is φ = 6572358144.

The previous prime is 20613364703. The next prime is 20613364711. The reversal of 20613364704 is 40746331602.

It is a happy number.

20613364704 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 3 + 3 + 647 + 0 + 4 = 666.

It is a super-2 number, since 2×20613364704² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20613364703) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 113269 + ... + 232500.

It is an arithmetic number, because the mean of its divisors is an integer number (527160942).

Almost surely, 2^20613364704 is an apocalyptic number.

20613364704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20613364704 is an abundant number, since it is smaller than the sum of its proper divisors (42645948336).

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

20613364704 is a wasteful number, since it uses less digits than its factorization.

20613364704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345814 (or 345797 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 20613364704 in words is "twenty billion, six hundred thirteen million, three hundred sixty-four thousand, seven hundred four".