21716980632 has 40 divisors (see below), whose sum is σ = 60827655900. Its totient is φ = 7238993328.

The previous prime is 21716980619. The next prime is 21716980661. The reversal of 21716980632 is 23608961712.

21716980632 is a `hidden beast` number, since 2 + 1 + 7 + 1 + 6 + 9 + 8 + 0 + 632 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16756282 + ... + 16757577.

Almost surely, 2^21716980632 is an apocalyptic number.

It is an amenable number.

21716980632 is an abundant number, since it is smaller than the sum of its proper divisors (39110675268).

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

21716980632 is a wasteful number, since it uses less digits than its factorization.

21716980632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33513877 (or 33513864 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 21716980632 in words is "twenty-one billion, seven hundred sixteen million, nine hundred eighty thousand, six hundred thirty-two".