21967880706 has 24 divisors (see below), whose sum is σ = 47638400940. Its totient is φ = 7316269056.

The previous prime is 21967880659. The next prime is 21967880723. The reversal of 21967880706 is 60708876912.

It can be written as a sum of positive squares in 2 ways, for example, as 21967686225 + 194481 = 148215^2 + 441^2 .

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 11 ways as a sum of consecutive naturals, for example, 508491 + ... + 549998.

Almost surely, 2^21967880706 is an apocalyptic number.

21967880706 is an abundant number, since it is smaller than the sum of its proper divisors (25670520234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21967880706 is a wasteful number, since it uses less digits than its factorization.

21967880706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059650 (or 1059647 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 21967880706 in words is "twenty-one billion, nine hundred sixty-seven million, eight hundred eighty thousand, seven hundred six".