22875321618 has 126 divisors (see below), whose sum is σ = 54885741519. Its totient is φ = 7145770752.

The previous prime is 22875321617. The next prime is 22875321619. The reversal of 22875321618 is 81612357822.

22875321618 is a `hidden beast` number, since 2 + 2 + 8 + 7 + 5 + 3 + 21 + 618 = 666.

It is an interprime number because it is at equal distance from previous prime (22875321617) and next prime (22875321619).

It can be written as a sum of positive squares in 5 ways, for example, as 10923803289 + 11951518329 = 104517^2 + 109323^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106947.

It is not an unprimeable number, because it can be changed into a prime (22875321617) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 98177230 + ... + 98177462.

Almost surely, 2^22875321618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22875321618

22875321618 is an abundant number, since it is smaller than the sum of its proper divisors (32010419901).

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

22875321618 is an frugal number, since it uses more digits than its factorization.

22875321618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 255 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 22875321618 in words is "twenty-two billion, eight hundred seventy-five million, three hundred twenty-one thousand, six hundred eighteen".