115549774685 has 4 divisors (see below), whose sum is σ = 138659729628. Its totient is φ = 92439819744.

The previous prime is 115549774579. The next prime is 115549774693. The reversal of 115549774685 is 586477945511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19908645604 + 95641129081 = 141098^2 + 309259^2 .

It is a cyclic number.

It is not a de Polignac number, because 115549774685 - 2⁸ = 115549774429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11554977464 + ... + 11554977473.

It is an arithmetic number, because the mean of its divisors is an integer number (34664932407).

Almost surely, 2^115549774685 is an apocalyptic number.

It is an amenable number.

115549774685 is a deficient number, since it is larger than the sum of its proper divisors (23109954943).

115549774685 is an equidigital number, since it uses as much as digits as its factorization.

115549774685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23109954942.

The product of its digits is 42336000, while the sum is 62.

The spelling of 115549774685 in words is "one hundred fifteen billion, five hundred forty-nine million, seven hundred seventy-four thousand, six hundred eighty-five".