21960086634 has 32 divisors (see below), whose sum is σ = 51670794240. Its totient is φ = 6889438656.

The previous prime is 21960086633. The next prime is 21960086653. The reversal of 21960086634 is 43668006912.

21960086634 is a `hidden beast` number, since 2 + 1 + 9 + 6 + 0 + 0 + 8 + 6 + 634 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 21960086634.

It is not an unprimeable number, because it can be changed into a prime (21960086633) 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 15 ways as a sum of consecutive naturals, for example, 11959914 + ... + 11961749.

It is an arithmetic number, because the mean of its divisors is an integer number (1614712320).

Almost surely, 2^21960086634 is an apocalyptic number.

21960086634 is an abundant number, since it is smaller than the sum of its proper divisors (29710707606).

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

21960086634 is a wasteful number, since it uses less digits than its factorization.

21960086634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23921691 (or 23921685 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 21960086634 in words is "twenty-one billion, nine hundred sixty million, eighty-six thousand, six hundred thirty-four".