21753002372 has 12 divisors (see below), whose sum is σ = 38145925440. Its totient is φ = 10854166536.

The previous prime is 21753002363. The next prime is 21753002377. The reversal of 21753002372 is 27320035712.

It is a super-2 number, since 2×21753002372² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21753002377) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5581472 + ... + 5585367.

It is an arithmetic number, because the mean of its divisors is an integer number (3178827120).

Almost surely, 2^21753002372 is an apocalyptic number.

It is an amenable number.

21753002372 is a deficient number, since it is larger than the sum of its proper divisors (16392923068).

21753002372 is a wasteful number, since it uses less digits than its factorization.

21753002372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11167330 (or 11167328 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 21753002372 in words is "twenty-one billion, seven hundred fifty-three million, two thousand, three hundred seventy-two".