20624454464 has 56 divisors (see below), whose sum is σ = 41421039840. Its totient is φ = 10188412416.

The previous prime is 20624454439. The next prime is 20624454481. The reversal of 20624454464 is 46445442602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1792859 + ... + 1804325.

Almost surely, 2^20624454464 is an apocalyptic number.

It is an amenable number.

20624454464 is an abundant number, since it is smaller than the sum of its proper divisors (20796585376).

20624454464 is a wasteful number, since it uses less digits than its factorization.

20624454464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11815 (or 11805 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 41.

The spelling of 20624454464 in words is "twenty billion, six hundred twenty-four million, four hundred fifty-four thousand, four hundred sixty-four".