21677163312 has 60 divisors (see below), whose sum is σ = 65142094776. Its totient is φ = 6193474560.

The previous prime is 21677163307. The next prime is 21677163353. The reversal of 21677163312 is 21336177612.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4605889 + ... + 4610592.

Almost surely, 2^21677163312 is an apocalyptic number.

It is an amenable number.

21677163312 is an abundant number, since it is smaller than the sum of its proper divisors (43464931464).

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

21677163312 is a wasteful number, since it uses less digits than its factorization.

21677163312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216506 (or 9216493 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The spelling of 21677163312 in words is "twenty-one billion, six hundred seventy-seven million, one hundred sixty-three thousand, three hundred twelve".