21332007672 has 32 divisors (see below), whose sum is σ = 53338538880. Its totient is φ = 7109533280.

The previous prime is 21332007661. The next prime is 21332007689. The reversal of 21332007672 is 27670023312.

It is a congruent 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, 89797 + ... + 225227.

It is an arithmetic number, because the mean of its divisors is an integer number (1666829340).

Almost surely, 2^21332007672 is an apocalyptic number.

It is an amenable number.

21332007672 is an abundant number, since it is smaller than the sum of its proper divisors (32006531208).

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

21332007672 is a wasteful number, since it uses less digits than its factorization.

21332007672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142003 (or 141999 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The spelling of 21332007672 in words is "twenty-one billion, three hundred thirty-two million, seven thousand, six hundred seventy-two".