22656977431 has 4 divisors (see below), whose sum is σ = 24716702664. Its totient is φ = 20597252200.

The previous prime is 22656977423. The next prime is 22656977437. The reversal of 22656977431 is 13477965622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22656977431 - 2³ = 22656977423 is a prime.

It is a super-2 number, since 2×22656977431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22656977437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029862600 + ... + 1029862621.

It is an arithmetic number, because the mean of its divisors is an integer number (6179175666).

Almost surely, 2^22656977431 is an apocalyptic number.

22656977431 is a deficient number, since it is larger than the sum of its proper divisors (2059725233).

22656977431 is a wasteful number, since it uses less digits than its factorization.

22656977431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059725232.

The product of its digits is 3810240, while the sum is 52.

The spelling of 22656977431 in words is "twenty-two billion, six hundred fifty-six million, nine hundred seventy-seven thousand, four hundred thirty-one".