115631763189 has 4 divisors (see below), whose sum is σ = 154175684256. Its totient is φ = 77087842124.

The previous prime is 115631763179. The next prime is 115631763197. The reversal of 115631763189 is 981367136511.

It is a happy number.

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-115631763189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115631763179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19271960529 + ... + 19271960534.

It is an arithmetic number, because the mean of its divisors is an integer number (38543921064).

Almost surely, 2^115631763189 is an apocalyptic number.

It is an amenable number.

115631763189 is a deficient number, since it is larger than the sum of its proper divisors (38543921067).

115631763189 is an equidigital number, since it uses as much as digits as its factorization.

115631763189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38543921066.

The product of its digits is 816480, while the sum is 51.

The spelling of 115631763189 in words is "one hundred fifteen billion, six hundred thirty-one million, seven hundred sixty-three thousand, one hundred eighty-nine".