21675423184 has 20 divisors (see below), whose sum is σ = 41998847616. Its totient is φ = 10837010912.

The previous prime is 21675423179. The next prime is 21675423229. The reversal of 21675423184 is 48132457612.

It is a self number, because there is not a number n which added to its sum of digits gives 21675423184.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287247 + ... + 354769.

Almost surely, 2^21675423184 is an apocalyptic number.

It is an amenable number.

21675423184 is a deficient number, since it is larger than the sum of its proper divisors (20323424432).

21675423184 is a wasteful number, since it uses less digits than its factorization.

21675423184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87594 (or 87588 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The spelling of 21675423184 in words is "twenty-one billion, six hundred seventy-five million, four hundred twenty-three thousand, one hundred eighty-four".