115816387597 has 2 divisors, whose sum is σ = 115816387598. Its totient is φ = 115816387596.

The previous prime is 115816387591. The next prime is 115816387637. The reversal of 115816387597 is 795783618511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67158204201 + 48658183396 = 259149^2 + 220586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115816387597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115816387591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57908193798 + 57908193799.

It is an arithmetic number, because the mean of its divisors is an integer number (57908193799).

Almost surely, 2^115816387597 is an apocalyptic number.

It is an amenable number.

115816387597 is a deficient number, since it is larger than the sum of its proper divisors (1).

115816387597 is an equidigital number, since it uses as much as digits as its factorization.

115816387597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 61.

The spelling of 115816387597 in words is "one hundred fifteen billion, eight hundred sixteen million, three hundred eighty-seven thousand, five hundred ninety-seven".