21312598984 has 16 divisors (see below), whose sum is σ = 42064340400. Its totient is φ = 10095441552.

The previous prime is 21312598949. The next prime is 21312599027. The reversal of 21312598984 is 48989521312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70107082 + ... + 70107385.

It is an arithmetic number, because the mean of its divisors is an integer number (2629021275).

Almost surely, 2^21312598984 is an apocalyptic number.

It is an amenable number.

21312598984 is a deficient number, since it is larger than the sum of its proper divisors (20751741416).

21312598984 is a wasteful number, since it uses less digits than its factorization.

21312598984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140214492 (or 140214488 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The spelling of 21312598984 in words is "twenty-one billion, three hundred twelve million, five hundred ninety-eight thousand, nine hundred eighty-four".