22564456261 has 8 divisors (see below), whose sum is σ = 22810519904. Its totient is φ = 22319705520.

The previous prime is 22564456247. The next prime is 22564456267. The reversal of 22564456261 is 16265446522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22564456261 - 2²⁷ = 22430238533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564456267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293646 + ... + 362431.

It is an arithmetic number, because the mean of its divisors is an integer number (2851314988).

Almost surely, 2^22564456261 is an apocalyptic number.

It is an amenable number.

22564456261 is a deficient number, since it is larger than the sum of its proper divisors (246063643).

22564456261 is a wasteful number, since it uses less digits than its factorization.

22564456261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656451.

The product of its digits is 691200, while the sum is 43.

The spelling of 22564456261 in words is "twenty-two billion, five hundred sixty-four million, four hundred fifty-six thousand, two hundred sixty-one".