22524332161 has 4 divisors (see below), whose sum is σ = 23301033300. Its totient is φ = 21747631024.

The previous prime is 22524332113. The next prime is 22524332179. The reversal of 22524332161 is 16123342522.

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 11787227761 + 10737104400 = 108569^2 + 103620^2 .

It is a cyclic number.

It is not a de Polignac number, because 22524332161 - 2²¹ = 22522235009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22524330161) 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, 388350526 + ... + 388350583.

It is an arithmetic number, because the mean of its divisors is an integer number (5825258325).

Almost surely, 2^22524332161 is an apocalyptic number.

It is an amenable number.

22524332161 is a deficient number, since it is larger than the sum of its proper divisors (776701139).

22524332161 is an equidigital number, since it uses as much as digits as its factorization.

22524332161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776701138.

The product of its digits is 17280, while the sum is 31.

Adding to 22524332161 its reverse (16123342522), we get a palindrome (38647674683).

The spelling of 22524332161 in words is "twenty-two billion, five hundred twenty-four million, three hundred thirty-two thousand, one hundred sixty-one".