21371933692 has 48 divisors (see below), whose sum is σ = 38102625792. Its totient is φ = 10487917440.

The previous prime is 21371933683. The next prime is 21371933711. The reversal of 21371933692 is 29633917312.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33237523 + ... + 33238165.

It is an arithmetic number, because the mean of its divisors is an integer number (793804704).

Almost surely, 2^21371933692 is an apocalyptic number.

It is an amenable number.

21371933692 is a deficient number, since it is larger than the sum of its proper divisors (16730692100).

21371933692 is a wasteful number, since it uses less digits than its factorization.

21371933692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1376 counting only the distinct ones).

The product of its digits is 367416, while the sum is 46.

The spelling of 21371933692 in words is "twenty-one billion, three hundred seventy-one million, nine hundred thirty-three thousand, six hundred ninety-two".