21188767312304 has 80 divisors (see below), whose sum is σ = 42207195649920. Its totient is φ = 10299813396480.

The previous prime is 21188767312301. The next prime is 21188767312309. The reversal of 21188767312304 is 40321376788112.

It is not an unprimeable number, because it can be changed into a prime (21188767312301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74423984 + ... + 74708144.

It is an arithmetic number, because the mean of its divisors is an integer number (527589945624).

Almost surely, 2^{21188767312304} is an apocalyptic number.

It is an amenable number.

21188767312304 is a deficient number, since it is larger than the sum of its proper divisors (21018428337616).

21188767312304 is a wasteful number, since it uses less digits than its factorization.

21188767312304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284878 (or 284872 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 21188767312304 in words is "twenty-one trillion, one hundred eighty-eight billion, seven hundred sixty-seven million, three hundred twelve thousand, three hundred four".