22305782761 has 2 divisors, whose sum is σ = 22305782762. Its totient is φ = 22305782760.

The previous prime is 22305782729. The next prime is 22305782783. The reversal of 22305782761 is 16728750322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13229600400 + 9076182361 = 115020^2 + 95269^2 .

It is a cyclic number.

It is not a de Polignac number, because 22305782761 - 2⁵ = 22305782729 is a prime.

It is not a weakly prime, because it can be changed into another prime (22305782711) 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 as a sum of consecutive naturals, namely, 11152891380 + 11152891381.

It is an arithmetic number, because the mean of its divisors is an integer number (11152891381).

Almost surely, 2^22305782761 is an apocalyptic number.

It is an amenable number.

22305782761 is a deficient number, since it is larger than the sum of its proper divisors (1).

22305782761 is an equidigital number, since it uses as much as digits as its factorization.

22305782761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 22305782761 in words is "twenty-two billion, three hundred five million, seven hundred eighty-two thousand, seven hundred sixty-one".