115197209791 has 16 divisors (see below), whose sum is σ = 120713040000. Its totient is φ = 109785102336.

The previous prime is 115197209783. The next prime is 115197209807. The reversal of 115197209791 is 197902791511.

It is not a de Polignac number, because 115197209791 - 2³ = 115197209783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115197209891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12754065 + ... + 12763093.

It is an arithmetic number, because the mean of its divisors is an integer number (7544565000).

Almost surely, 2^115197209791 is an apocalyptic number.

115197209791 is a deficient number, since it is larger than the sum of its proper divisors (5515830209).

115197209791 is an equidigital number, since it uses as much as digits as its factorization.

115197209791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14706.

The product of its (nonzero) digits is 357210, while the sum is 52.

The spelling of 115197209791 in words is "one hundred fifteen billion, one hundred ninety-seven million, two hundred nine thousand, seven hundred ninety-one".