22545923409 has 9 divisors (see below), whose sum is σ = 32566984489. Its totient is φ = 15030315300.

The previous prime is 22545923377. The next prime is 22545923429. The reversal of 22545923409 is 90432954522.

The square root of 22545923409 is 150153.

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

22545923409 is a `hidden beast` number, since 2 + 2 + 54 + 592 + 3 + 4 + 0 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 22545923409 - 2⁵ = 22545923377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22545923429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 425434 + ... + 475484.

Almost surely, 2^22545923409 is an apocalyptic number.

22545923409 is the 150153-rd square number.

22545923409 is the 75077-th centered octagonal number.

It is an amenable number.

22545923409 is a deficient number, since it is larger than the sum of its proper divisors (10021061080).

22545923409 is an frugal number, since it uses more digits than its factorization.

22545923409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100108 (or 50054 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 22545923409 in words is "twenty-two billion, five hundred forty-five million, nine hundred twenty-three thousand, four hundred nine".