22643135761 has 2 divisors, whose sum is σ = 22643135762. Its totient is φ = 22643135760.

The previous prime is 22643135741. The next prime is 22643135773. The reversal of 22643135761 is 16753134622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22370885761 + 272250000 = 149569^2 + 16500^2 .

It is a cyclic number.

It is not a de Polignac number, because 22643135761 - 2⁵ = 22643135729 is a prime.

It is not a weakly prime, because it can be changed into another prime (22643135701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321567880 + 11321567881.

It is an arithmetic number, because the mean of its divisors is an integer number (11321567881).

Almost surely, 2^22643135761 is an apocalyptic number.

It is an amenable number.

22643135761 is a deficient number, since it is larger than the sum of its proper divisors (1).

22643135761 is an equidigital number, since it uses as much as digits as its factorization.

22643135761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

It can be divided in two parts, 22643 and 135761, that added together give a square (158404 = 398²).

The spelling of 22643135761 in words is "twenty-two billion, six hundred forty-three million, one hundred thirty-five thousand, seven hundred sixty-one".