22545947880 has 48 divisors (see below), whose sum is σ = 73274331780. Its totient is φ = 6012252672.

The previous prime is 22545947857. The next prime is 22545947881. The reversal of 22545947880 is 8874954522.

22545947880 is a `hidden beast` number, since 2 + 2 + 545 + 94 + 7 + 8 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20568722724 + 1977225156 = 143418^2 + 44466^2 .

It is not an unprimeable number, because it can be changed into a prime (22545947881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31313457 + ... + 31314176.

Almost surely, 2^22545947880 is an apocalyptic number.

22545947880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22545947880 is an abundant number, since it is smaller than the sum of its proper divisors (50728383900).

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

22545947880 is a wasteful number, since it uses less digits than its factorization.

22545947880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62627650 (or 62627643 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 22545947880 in words is "twenty-two billion, five hundred forty-five million, nine hundred forty-seven thousand, eight hundred eighty".