22897439761 has 9 divisors (see below), whose sum is σ = 26637029499. Its totient is φ = 19625469024.

The previous prime is 22897439753. The next prime is 22897439767. The reversal of 22897439761 is 16793479822.

The square root of 22897439761 is 151319.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4088963025 + 18808476736 = 63945^2 + 137144^2 .

It is not a de Polignac number, because 22897439761 - 2³ = 22897439753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22897439696 and 22897439705.

It is not an unprimeable number, because it can be changed into a prime (22897439767) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1048425 + ... + 1070041.

Almost surely, 2^22897439761 is an apocalyptic number.

22897439761 is the 151319-th square number.

22897439761 is the 75660-th centered octagonal number.

It is an amenable number.

22897439761 is a deficient number, since it is larger than the sum of its proper divisors (3739589738).

22897439761 is an frugal number, since it uses more digits than its factorization.

22897439761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43248 (or 21624 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 58.

The spelling of 22897439761 in words is "twenty-two billion, eight hundred ninety-seven million, four hundred thirty-nine thousand, seven hundred sixty-one".