21433927392 has 72 divisors (see below), whose sum is σ = 60970848120. Its totient is φ = 7142519040.

The previous prime is 21433927363. The next prime is 21433927429. The reversal of 21433927392 is 29372933412.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1183042 + ... + 1201022.

It is an arithmetic number, because the mean of its divisors is an integer number (846817335).

Almost surely, 2^21433927392 is an apocalyptic number.

It is an amenable number.

21433927392 is an abundant number, since it is smaller than the sum of its proper divisors (39536920728).

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

21433927392 is a wasteful number, since it uses less digits than its factorization.

21433927392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22136 (or 22125 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The spelling of 21433927392 in words is "twenty-one billion, four hundred thirty-three million, nine hundred twenty-seven thousand, three hundred ninety-two".