20024624656 has 20 divisors (see below), whose sum is σ = 38848186300. Its totient is φ = 9999286272.

The previous prime is 20024624579. The next prime is 20024624681. The reversal of 20024624656 is 65642642002.

It can be written as a sum of positive squares in 2 ways, for example, as 9843814656 + 10180810000 = 99216^2 + 100900^2 .

It is a super-2 number, since 2×20024624656² (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 3 ways as a sum of consecutive naturals, for example, 801441 + ... + 826048.

It is an arithmetic number, because the mean of its divisors is an integer number (1942409315).

Almost surely, 2^20024624656 is an apocalyptic number.

It is an amenable number.

20024624656 is a deficient number, since it is larger than the sum of its proper divisors (18823561644).

20024624656 is a wasteful number, since it uses less digits than its factorization.

20024624656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628266 (or 1628260 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

It can be divided in two parts, 20024 and 624656, that added together give a triangular number (644680 = T₁₁₃₅).

The spelling of 20024624656 in words is "twenty billion, twenty-four million, six hundred twenty-four thousand, six hundred fifty-six".