97170975917 has 2 divisors, whose sum is σ = 97170975918. Its totient is φ = 97170975916.

The previous prime is 97170975883. The next prime is 97170975997. The reversal of 97170975917 is 71957907179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84847533796 + 12323442121 = 291286^2 + 111011^2 .

It is a cyclic number.

It is not a de Polignac number, because 97170975917 - 2¹⁴ = 97170959533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97170975917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97170975997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48585487958 + 48585487959.

It is an arithmetic number, because the mean of its divisors is an integer number (48585487959).

Almost surely, 2^97170975917 is an apocalyptic number.

It is an amenable number.

97170975917 is a deficient number, since it is larger than the sum of its proper divisors (1).

97170975917 is an equidigital number, since it uses as much as digits as its factorization.

97170975917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8751645, while the sum is 62.

The spelling of 97170975917 in words is "ninety-seven billion, one hundred seventy million, nine hundred seventy-five thousand, nine hundred seventeen".