22636417640 has 32 divisors (see below), whose sum is σ = 51382675080. Its totient is φ = 8974436352.

The previous prime is 22636417613. The next prime is 22636417663. The reversal of 22636417640 is 4671463622.

It can be written as a sum of positive squares in 4 ways, for example, as 7560998116 + 15075419524 = 86954^2 + 122782^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2499509 + ... + 2508548.

Almost surely, 2^22636417640 is an apocalyptic number.

22636417640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22636417640 is an abundant number, since it is smaller than the sum of its proper divisors (28746257440).

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

22636417640 is a wasteful number, since it uses less digits than its factorization.

22636417640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008181 (or 5008177 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 22636417640 in words is "twenty-two billion, six hundred thirty-six million, four hundred seventeen thousand, six hundred forty".