21696228052 has 12 divisors (see below), whose sum is σ = 38031789600. Its totient is φ = 10830002456.

The previous prime is 21696228023. The next prime is 21696228089. The reversal of 21696228052 is 25082269612.

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, 4525198 + ... + 4529989.

It is an arithmetic number, because the mean of its divisors is an integer number (3169315800).

Almost surely, 2^21696228052 is an apocalyptic number.

It is an amenable number.

21696228052 is a deficient number, since it is larger than the sum of its proper divisors (16335561548).

21696228052 is a wasteful number, since it uses less digits than its factorization.

21696228052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055790 (or 9055788 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 21696228052 in words is "twenty-one billion, six hundred ninety-six million, two hundred twenty-eight thousand, fifty-two".