21367316332 has 24 divisors (see below), whose sum is σ = 38418035264. Its totient is φ = 10390954752.

The previous prime is 21367316291. The next prime is 21367316359. The reversal of 21367316332 is 23361376312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 21367316291 and 21367316300.

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, 383428 + ... + 435604.

Almost surely, 2^21367316332 is an apocalyptic number.

It is an amenable number.

21367316332 is a deficient number, since it is larger than the sum of its proper divisors (17050718932).

21367316332 is a wasteful number, since it uses less digits than its factorization.

21367316332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54985 (or 54983 counting only the distinct ones).

The product of its digits is 81648, while the sum is 37.

The spelling of 21367316332 in words is "twenty-one billion, three hundred sixty-seven million, three hundred sixteen thousand, three hundred thirty-two".