22747474661 has 2 divisors, whose sum is σ = 22747474662. Its totient is φ = 22747474660.

The previous prime is 22747474613. The next prime is 22747474693. The reversal of 22747474661 is 16647474722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22438242436 + 309232225 = 149794^2 + 17585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22747474661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22747470661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11373737330 + 11373737331.

It is an arithmetic number, because the mean of its divisors is an integer number (11373737331).

Almost surely, 2^22747474661 is an apocalyptic number.

It is an amenable number.

22747474661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22747474661 is an equidigital number, since it uses as much as digits as its factorization.

22747474661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 50.

The spelling of 22747474661 in words is "twenty-two billion, seven hundred forty-seven million, four hundred seventy-four thousand, six hundred sixty-one".