22999845649 has 27 divisors (see below), whose sum is σ = 26888560923. Its totient is φ = 19654747200.

The previous prime is 22999845623. The next prime is 22999845763. The reversal of 22999845649 is 94654899922.

The square root of 22999845649 is 151657.

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., 17906454225 + 5093391424 = 133815^2 + 71368^2 .

It is not a de Polignac number, because 22999845649 - 2²¹ = 22997748497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22999843649) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 28359454 + ... + 28360264.

Almost surely, 2^22999845649 is an apocalyptic number.

22999845649 is the 151657-th square number.

22999845649 is the 75829-th centered octagonal number.

It is an amenable number.

22999845649 is a deficient number, since it is larger than the sum of its proper divisors (3888715274).

22999845649 is an frugal number, since it uses more digits than its factorization.

22999845649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 839 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 67.

The spelling of 22999845649 in words is "twenty-two billion, nine hundred ninety-nine million, eight hundred forty-five thousand, six hundred forty-nine".