22608875521 has 4 divisors (see below), whose sum is σ = 23035458132. Its totient is φ = 22182292912.

The previous prime is 22608875519. The next prime is 22608875533. The reversal of 22608875521 is 12557880622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14511575296 + 8097300225 = 120464^2 + 89985^2 .

It is a cyclic number.

It is not a de Polignac number, because 22608875521 - 2¹ = 22608875519 is a prime.

It is a super-2 number, since 2×22608875521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22608875551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213291226 + ... + 213291331.

It is an arithmetic number, because the mean of its divisors is an integer number (5758864533).

Almost surely, 2^22608875521 is an apocalyptic number.

It is an amenable number.

22608875521 is a deficient number, since it is larger than the sum of its proper divisors (426582611).

22608875521 is an equidigital number, since it uses as much as digits as its factorization.

22608875521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426582610.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 22608875521 in words is "twenty-two billion, six hundred eight million, eight hundred seventy-five thousand, five hundred twenty-one".