21634712000 has 112 divisors (see below), whose sum is σ = 58449362400. Its totient is φ = 7867136000.

The previous prime is 21634711999. The next prime is 21634712017. The reversal of 21634712000 is 21743612.

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, 34925 + ... + 210924.

Almost surely, 2^21634712000 is an apocalyptic number.

21634712000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21634712000 is an abundant number, since it is smaller than the sum of its proper divisors (36814650400).

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

21634712000 is a wasteful number, since it uses less digits than its factorization.

21634712000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245887 (or 245867 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 21634712000 in words is "twenty-one billion, six hundred thirty-four million, seven hundred twelve thousand".