20624406544 has 135 divisors (see below), whose sum is σ = 48811623903. Its totient is φ = 8416812096.

The previous prime is 20624406527. The next prime is 20624406581. The reversal of 20624406544 is 44560442602.

The square root of 20624406544 is 143612.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×20624406544² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 92486017 + ... + 92486239.

Almost surely, 2^20624406544 is an apocalyptic number.

20624406544 is the 143612-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20624406544

20624406544 is an abundant number, since it is smaller than the sum of its proper divisors (28187217359).

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

20624406544 is an equidigital number, since it uses as much as digits as its factorization.

20624406544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

The spelling of 20624406544 in words is "twenty billion, six hundred twenty-four million, four hundred six thousand, five hundred forty-four".