21963475876 has 12 divisors (see below), whose sum is σ = 38437149772. Its totient is φ = 10981433088.

The previous prime is 21963475867. The next prime is 21963475883. The reversal of 21963475876 is 67857436912.

It can be written as a sum of positive squares in 2 ways, for example, as 8616294976 + 13347180900 = 92824^2 + 115530^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21963475876.

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 3 ways as a sum of consecutive naturals, for example, 186556 + ... + 280588.

Almost surely, 2^21963475876 is an apocalyptic number.

It is an amenable number.

21963475876 is a deficient number, since it is larger than the sum of its proper divisors (16473673896).

21963475876 is a wasteful number, since it uses less digits than its factorization.

21963475876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152430 (or 152428 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 58.

The spelling of 21963475876 in words is "twenty-one billion, nine hundred sixty-three million, four hundred seventy-five thousand, eight hundred seventy-six".