21889683924 has 48 divisors (see below), whose sum is σ = 53517932160. Its totient is φ = 6950338560.

The previous prime is 21889683887. The next prime is 21889683941. The reversal of 21889683924 is 42938698812.

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, 98029 + ... + 231060.

It is an arithmetic number, because the mean of its divisors is an integer number (1114956920).

Almost surely, 2^21889683924 is an apocalyptic number.

It is an amenable number.

21889683924 is an abundant number, since it is smaller than the sum of its proper divisors (31628248236).

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

21889683924 is a wasteful number, since it uses less digits than its factorization.

21889683924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329360 (or 329358 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 60.

The spelling of 21889683924 in words is "twenty-one billion, eight hundred eighty-nine million, six hundred eighty-three thousand, nine hundred twenty-four".