115127791897 has 2 divisors, whose sum is σ = 115127791898. Its totient is φ = 115127791896.

The previous prime is 115127791879. The next prime is 115127791927. The reversal of 115127791897 is 798197721511.

Together with previous prime (115127791879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114886424601 + 241367296 = 338949^2 + 15536^2 .

It is an emirp because it is prime and its reverse (798197721511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115127791897 - 2³⁵ = 80768053529 is a prime.

It is not a weakly prime, because it can be changed into another prime (115127761897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57563895948 + 57563895949.

It is an arithmetic number, because the mean of its divisors is an integer number (57563895949).

Almost surely, 2^115127791897 is an apocalyptic number.

It is an amenable number.

115127791897 is a deficient number, since it is larger than the sum of its proper divisors (1).

115127791897 is an equidigital number, since it uses as much as digits as its factorization.

115127791897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2222640, while the sum is 58.

The spelling of 115127791897 in words is "one hundred fifteen billion, one hundred twenty-seven million, seven hundred ninety-one thousand, eight hundred ninety-seven".