21275814760684 has 24 divisors (see below), whose sum is σ = 40629769414416. Its totient is φ = 9667895160000.

The previous prime is 21275814760643. The next prime is 21275814760751. The reversal of 21275814760684 is 48606741857212.

It is a happy number.

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, 73096387 + ... + 73386874.

It is an arithmetic number, because the mean of its divisors is an integer number (1692907058934).

Almost surely, 2^{21275814760684} is an apocalyptic number.

It is an amenable number.

21275814760684 is a deficient number, since it is larger than the sum of its proper divisors (19353954653732).

21275814760684 is a wasteful number, since it uses less digits than its factorization.

21275814760684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146486577 (or 146486575 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 21275814760684 in words is "twenty-one trillion, two hundred seventy-five billion, eight hundred fourteen million, seven hundred sixty thousand, six hundred eighty-four".