21635000450 has 48 divisors (see below), whose sum is σ = 46159736064. Its totient is φ = 7390310400.

The previous prime is 21635000449. The next prime is 21635000483. The reversal of 21635000450 is 5400053612.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19199 + ... + 208898.

It is an arithmetic number, because the mean of its divisors is an integer number (961661168).

Almost surely, 2^21635000450 is an apocalyptic number.

21635000450 is an abundant number, since it is smaller than the sum of its proper divisors (24524735614).

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

21635000450 is a wasteful number, since it uses less digits than its factorization.

21635000450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228387 (or 228382 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 21635000450 in words is "twenty-one billion, six hundred thirty-five million, four hundred fifty", and thus it is an aban number.