22756435561 has 4 divisors (see below), whose sum is σ = 22788086400. Its totient is φ = 22724784724.

The previous prime is 22756435531. The next prime is 22756435579. The reversal of 22756435561 is 16553465722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22756435561 - 2³³ = 14166500969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22756435531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15824341 + ... + 15825778.

It is an arithmetic number, because the mean of its divisors is an integer number (5697021600).

Almost surely, 2^22756435561 is an apocalyptic number.

It is an amenable number.

22756435561 is a deficient number, since it is larger than the sum of its proper divisors (31650839).

22756435561 is an equidigital number, since it uses as much as digits as its factorization.

22756435561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31650838.

The product of its digits is 1512000, while the sum is 46.

The spelling of 22756435561 in words is "twenty-two billion, seven hundred fifty-six million, four hundred thirty-five thousand, five hundred sixty-one".