21376765407372 has 24 divisors (see below), whose sum is σ = 49880883897600. Its totient is φ = 7125336381456.

The previous prime is 21376765407337. The next prime is 21376765407377. The reversal of 21376765407372 is 27370456767312.

It is a super-2 number, since 2×21376765407372² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21376765407377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31157472 + ... + 31836167.

It is an arithmetic number, because the mean of its divisors is an integer number (2078370162400).

Almost surely, 2^{21376765407372} is an apocalyptic number.

It is an amenable number.

21376765407372 is an abundant number, since it is smaller than the sum of its proper divisors (28504118490228).

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

21376765407372 is a wasteful number, since it uses less digits than its factorization.

21376765407372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63021925 (or 63021923 counting only the distinct ones).

The product of its (nonzero) digits is 62233920, while the sum is 60.

The spelling of 21376765407372 in words is "twenty-one trillion, three hundred seventy-six billion, seven hundred sixty-five million, four hundred seven thousand, three hundred seventy-two".