18764752921768 has 32 divisors (see below), whose sum is σ = 40221677160000. Its totient is φ = 8039738500992.

The previous prime is 18764752921721. The next prime is 18764752921799. The reversal of 18764752921768 is 86712925746781.

It is a self number, because there is not a number n which added to its sum of digits gives 18764752921768.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47687005 + ... + 48078892.

It is an arithmetic number, because the mean of its divisors is an integer number (1256927411250).

Almost surely, 2^{18764752921768} is an apocalyptic number.

It is an amenable number.

18764752921768 is an abundant number, since it is smaller than the sum of its proper divisors (21456924238232).

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

18764752921768 is a wasteful number, since it uses less digits than its factorization.

18764752921768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95769409 (or 95769405 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 73.

The spelling of 18764752921768 in words is "eighteen trillion, seven hundred sixty-four billion, seven hundred fifty-two million, nine hundred twenty-one thousand, seven hundred sixty-eight".