21923731616 has 48 divisors (see below), whose sum is σ = 43909641216. Its totient is φ = 10773697536.

The previous prime is 21923731603. The next prime is 21923731633. The reversal of 21923731616 is 61613732912.

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 7 ways as a sum of consecutive naturals, for example, 409640 + ... + 460056.

It is an arithmetic number, because the mean of its divisors is an integer number (914784192).

Almost surely, 2^21923731616 is an apocalyptic number.

It is an amenable number.

21923731616 is an abundant number, since it is smaller than the sum of its proper divisors (21985909600).

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

21923731616 is a wasteful number, since it uses less digits than its factorization.

21923731616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50661 (or 50653 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The spelling of 21923731616 in words is "twenty-one billion, nine hundred twenty-three million, seven hundred thirty-one thousand, six hundred sixteen".