21623264882 has 6 divisors (see below), whose sum is σ = 32435209263. Its totient is φ = 10811528462.

The previous prime is 21623264879. The next prime is 21623264909. The reversal of 21623264882 is 28846232612.

It can be written as a sum of positive squares in only one way, i.e., 10811632441 + 10811632441 = 103979^2 + 103979^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=103979.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 155969 + ... + 259947.

Almost surely, 2^21623264882 is an apocalyptic number.

21623264882 is a deficient number, since it is larger than the sum of its proper divisors (10811944381).

21623264882 is an frugal number, since it uses more digits than its factorization.

21623264882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207960 (or 103981 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The spelling of 21623264882 in words is "twenty-one billion, six hundred twenty-three million, two hundred sixty-four thousand, eight hundred eighty-two".