115265381557 has 4 divisors (see below), whose sum is σ = 115271217280. Its totient is φ = 115259545836.

The previous prime is 115265381531. The next prime is 115265381563. The reversal of 115265381557 is 755183562511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115265381557 is a prime.

It is a super-2 number, since 2×115265381557² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115265381557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115265381527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888133 + ... + 2927770.

It is an arithmetic number, because the mean of its divisors is an integer number (28817804320).

Almost surely, 2^115265381557 is an apocalyptic number.

It is an amenable number.

115265381557 is a deficient number, since it is larger than the sum of its proper divisors (5835723).

115265381557 is an equidigital number, since it uses as much as digits as its factorization.

115265381557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5835722.

The product of its digits is 1260000, while the sum is 49.

The spelling of 115265381557 in words is "one hundred fifteen billion, two hundred sixty-five million, three hundred eighty-one thousand, five hundred fifty-seven".