22759644769 has 9 divisors (see below), whose sum is σ = 23160997587. Its totient is φ = 22365138024.

The previous prime is 22759644683. The next prime is 22759644781. The reversal of 22759644769 is 96744695722.

It is a happy number.

The square root of 22759644769 is 150863.

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., 9766380625 + 12993264144 = 98825^2 + 113988^2 .

It is not a de Polignac number, because 22759644769 - 2²³ = 22751256161 is a prime.

It is a super-2 number, since 2×22759644769² (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 (22759644799) 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, 8899639 + ... + 8902195.

Almost surely, 2^22759644769 is an apocalyptic number.

22759644769 is the 150863-rd square number.

22759644769 is the 75432-nd centered octagonal number.

It is an amenable number.

22759644769 is a deficient number, since it is larger than the sum of its proper divisors (401352818).

22759644769 is an frugal number, since it uses more digits than its factorization.

22759644769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5232 (or 2616 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 61.

The spelling of 22759644769 in words is "twenty-two billion, seven hundred fifty-nine million, six hundred forty-four thousand, seven hundred sixty-nine".