22495621780 has 12 divisors (see below), whose sum is σ = 47240805780. Its totient is φ = 8998248704.

The previous prime is 22495621777. The next prime is 22495621793. The reversal of 22495621780 is 8712659422.

It can be written as a sum of positive squares in 2 ways, for example, as 16054917264 + 6440704516 = 126708^2 + 80254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22495621780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562390525 + ... + 562390564.

It is an arithmetic number, because the mean of its divisors is an integer number (3936733815).

Almost surely, 2^22495621780 is an apocalyptic number.

22495621780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22495621780 is an abundant number, since it is smaller than the sum of its proper divisors (24745184000).

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

22495621780 is a wasteful number, since it uses less digits than its factorization.

22495621780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124781098 (or 1124781096 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 22495621780 in words is "twenty-two billion, four hundred ninety-five million, six hundred twenty-one thousand, seven hundred eighty".