917722552897 has 2 divisors, whose sum is σ = 917722552898. Its totient is φ = 917722552896.

The previous prime is 917722552849. The next prime is 917722552921. The reversal of 917722552897 is 798255227719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510137349121 + 407585203776 = 714239^2 + 638424^2 .

It is a cyclic number.

It is not a de Polignac number, because 917722552897 - 2¹⁹ = 917722028609 is a prime.

It is not a weakly prime, because it can be changed into another prime (917722552597) 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, 458861276448 + 458861276449.

It is an arithmetic number, because the mean of its divisors is an integer number (458861276449).

Almost surely, 2^917722552897 is an apocalyptic number.

It is an amenable number.

917722552897 is a deficient number, since it is larger than the sum of its proper divisors (1).

917722552897 is an equidigital number, since it uses as much as digits as its factorization.

917722552897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44452800, while the sum is 64.

The spelling of 917722552897 in words is "nine hundred seventeen billion, seven hundred twenty-two million, five hundred fifty-two thousand, eight hundred ninety-seven".