21536753107624 has 16 divisors (see below), whose sum is σ = 40648838649120. Its totient is φ = 10697062801200.

The previous prime is 21536753107591. The next prime is 21536753107627. The reversal of 21536753107624 is 42670135763512.

It is not an unprimeable number, because it can be changed into a prime (21536753107627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8914217794 + ... + 8914220209.

It is an arithmetic number, because the mean of its divisors is an integer number (2540552415570).

Almost surely, 2^{21536753107624} is an apocalyptic number.

It is an amenable number.

21536753107624 is a deficient number, since it is larger than the sum of its proper divisors (19112085541496).

21536753107624 is a wasteful number, since it uses less digits than its factorization.

21536753107624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17828438160 (or 17828438156 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 21536753107624 in words is "twenty-one trillion, five hundred thirty-six billion, seven hundred fifty-three million, one hundred seven thousand, six hundred twenty-four".