245574122097817 has 2 divisors, whose sum is σ = 245574122097818. Its totient is φ = 245574122097816.

The previous prime is 245574122097797. The next prime is 245574122097833. The reversal of 245574122097817 is 718790221475542.

245574122097817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196381797749641 + 49192324348176 = 14013629^2 + 7013724^2 .

It is a cyclic number.

It is not a de Polignac number, because 245574122097817 - 2¹¹ = 245574122095769 is a prime.

It is a super-2 number, since 2×245574122097817² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245574122097217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122787061048908 + 122787061048909.

It is an arithmetic number, because the mean of its divisors is an integer number (122787061048909).

Almost surely, 2^{245574122097817} is an apocalyptic number.

It is an amenable number.

245574122097817 is a deficient number, since it is larger than the sum of its proper divisors (1).

245574122097817 is an equidigital number, since it uses as much as digits as its factorization.

245574122097817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79027200, while the sum is 64.

The spelling of 245574122097817 in words is "two hundred forty-five trillion, five hundred seventy-four billion, one hundred twenty-two million, ninety-seven thousand, eight hundred seventeen".