20388680356932 has 60 divisors (see below), whose sum is σ = 53310577818960. Its totient is φ = 6794882846064.

The previous prime is 20388680356927. The next prime is 20388680356937. The reversal of 20388680356932 is 23965308688302.

20388680356932 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 8 + 68 + 0 + 3 + 569 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (20388680356927) and next prime (20388680356937).

It is a self number, because there is not a number n which added to its sum of digits gives 20388680356932.

It is not an unprimeable number, because it can be changed into a prime (20388680356937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4580298 + ... + 7858529.

It is an arithmetic number, because the mean of its divisors is an integer number (888509630316).

Almost surely, 2^{20388680356932} is an apocalyptic number.

It is an amenable number.

20388680356932 is an abundant number, since it is smaller than the sum of its proper divisors (32921897462028).

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

20388680356932 is a wasteful number, since it uses less digits than its factorization.

20388680356932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12443902 (or 12443891 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 63.

The spelling of 20388680356932 in words is "twenty trillion, three hundred eighty-eight billion, six hundred eighty million, three hundred fifty-six thousand, nine hundred thirty-two".