21662952676 has 12 divisors (see below), whose sum is σ = 39905439280. Its totient is φ = 10261398600.

The previous prime is 21662952667. The next prime is 21662952677. The reversal of 21662952676 is 67625926612.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21662952677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142519350 + ... + 142519501.

Almost surely, 2^21662952676 is an apocalyptic number.

It is an amenable number.

21662952676 is a deficient number, since it is larger than the sum of its proper divisors (18242486604).

21662952676 is a wasteful number, since it uses less digits than its factorization.

21662952676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285038874 (or 285038872 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 21662952676 in words is "twenty-one billion, six hundred sixty-two million, nine hundred fifty-two thousand, six hundred seventy-six".