20880732624 has 80 divisors (see below), whose sum is σ = 54181204800. Its totient is φ = 6929445888.

The previous prime is 20880732583. The next prime is 20880732671. The reversal of 20880732624 is 42623708802.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16274287 + ... + 16275569.

It is an arithmetic number, because the mean of its divisors is an integer number (677265060).

Almost surely, 2^20880732624 is an apocalyptic number.

20880732624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20880732624 is an abundant number, since it is smaller than the sum of its proper divisors (33300472176).

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

20880732624 is a wasteful number, since it uses less digits than its factorization.

20880732624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532 (or 2526 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 20880732624 in words is "twenty billion, eight hundred eighty million, seven hundred thirty-two thousand, six hundred twenty-four".