21052631792 has 20 divisors (see below), whose sum is σ = 41657336736. Its totient is φ = 10302351360.

The previous prime is 21052631783. The next prime is 21052631797. The reversal of 21052631792 is 29713625012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21052631797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13997009 + ... + 13998512.

Almost surely, 2^21052631792 is an apocalyptic number.

It is an amenable number.

21052631792 is a deficient number, since it is larger than the sum of its proper divisors (20604704944).

21052631792 is a wasteful number, since it uses less digits than its factorization.

21052631792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27995576 (or 27995570 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 21052631792 in words is "twenty-one billion, fifty-two million, six hundred thirty-one thousand, seven hundred ninety-two".