21368322632 has 16 divisors (see below), whose sum is σ = 40092864000. Its totient is φ = 10676892240.

The previous prime is 21368322623. The next prime is 21368322649. The reversal of 21368322632 is 23622386312.

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, 896132 + ... + 919667.

It is an arithmetic number, because the mean of its divisors is an integer number (2505804000).

Almost surely, 2^21368322632 is an apocalyptic number.

It is an amenable number.

21368322632 is a deficient number, since it is larger than the sum of its proper divisors (18724541368).

21368322632 is a wasteful number, since it uses less digits than its factorization.

21368322632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817276 (or 1817272 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The spelling of 21368322632 in words is "twenty-one billion, three hundred sixty-eight million, three hundred twenty-two thousand, six hundred thirty-two".