22756691261 has 4 divisors (see below), whose sum is σ = 22758282624. Its totient is φ = 22755099900.

The previous prime is 22756691227. The next prime is 22756691273. The reversal of 22756691261 is 16219665722.

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 22756691261 - 2⁶ = 22756691197 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 (22756681261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774035 + ... + 802896.

It is an arithmetic number, because the mean of its divisors is an integer number (5689570656).

Almost surely, 2^22756691261 is an apocalyptic number.

It is an amenable number.

22756691261 is a deficient number, since it is larger than the sum of its proper divisors (1591363).

22756691261 is a wasteful number, since it uses less digits than its factorization.

22756691261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591362.

The product of its digits is 544320, while the sum is 47.

The spelling of 22756691261 in words is "twenty-two billion, seven hundred fifty-six million, six hundred ninety-one thousand, two hundred sixty-one".