109597115917 has 2 divisors, whose sum is σ = 109597115918. Its totient is φ = 109597115916.

The previous prime is 109597115851. The next prime is 109597115933. The reversal of 109597115917 is 719511795901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86267913796 + 23329202121 = 293714^2 + 152739^2 .

It is an emirp because it is prime and its reverse (719511795901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109597115917 - 2²³ = 109588727309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109597715917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54798557958 + 54798557959.

It is an arithmetic number, because the mean of its divisors is an integer number (54798557959).

Almost surely, 2^109597115917 is an apocalyptic number.

It is an amenable number.

109597115917 is a deficient number, since it is larger than the sum of its proper divisors (1).

109597115917 is an equidigital number, since it uses as much as digits as its factorization.

109597115917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 893025, while the sum is 55.

The spelling of 109597115917 in words is "one hundred nine billion, five hundred ninety-seven million, one hundred fifteen thousand, nine hundred seventeen".