22643135765 has 8 divisors (see below), whose sum is σ = 28108720440. Its totient is φ = 17489870272.

The previous prime is 22643135761. The next prime is 22643135773. The reversal of 22643135765 is 56753134622.

It can be written as a sum of positive squares in 4 ways, for example, as 8006491441 + 14636644324 = 89479^2 + 120982^2 .

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 22643135765 - 2² = 22643135761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643135761) 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, 78079634 + ... + 78079923.

It is an arithmetic number, because the mean of its divisors is an integer number (3513590055).

Almost surely, 2^22643135765 is an apocalyptic number.

It is an amenable number.

22643135765 is a deficient number, since it is larger than the sum of its proper divisors (5465584675).

22643135765 is a wasteful number, since it uses less digits than its factorization.

22643135765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156159591.

The product of its digits is 907200, while the sum is 44.

The spelling of 22643135765 in words is "twenty-two billion, six hundred forty-three million, one hundred thirty-five thousand, seven hundred sixty-five".