20624521008 has 120 divisors (see below), whose sum is σ = 66746488368. Its totient is φ = 5439426048.

The previous prime is 20624521007. The next prime is 20624521063. The reversal of 20624521008 is 80012542602.

It is not an unprimeable number, because it can be changed into a prime (20624521007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306691 + ... + 367842.

Almost surely, 2^20624521008 is an apocalyptic number.

20624521008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20624521008 is an abundant number, since it is smaller than the sum of its proper divisors (46121967360).

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

20624521008 is a wasteful number, since it uses less digits than its factorization.

20624521008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674571 (or 674558 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 20624521008 in words is "twenty billion, six hundred twenty-four million, five hundred twenty-one thousand, eight".