115814765817999 has 20 divisors (see below), whose sum is σ = 182112887123640. Its totient is φ = 73146167884080.

The previous prime is 115814765817941. The next prime is 115814765818061. The reversal of 115814765817999 is 999718567418511.

115814765817999 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 1 + 476 + 58 + 1 + 7 + 9 + 99 = 666.

It is not a de Polignac number, because 115814765817999 - 2¹⁶ = 115814765752463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115814765817929) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37626628032 + ... + 37626631109.

It is an arithmetic number, because the mean of its divisors is an integer number (9105644356182).

Almost surely, 2^{115814765817999} is an apocalyptic number.

115814765817999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

115814765817999 is a deficient number, since it is larger than the sum of its proper divisors (66298121305641).

115814765817999 is an equidigital number, since it uses as much as digits as its factorization.

115814765817999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75253259172 (or 75253259163 counting only the distinct ones).

The product of its digits is 1371686400, while the sum is 81.

The spelling of 115814765817999 in words is "one hundred fifteen trillion, eight hundred fourteen billion, seven hundred sixty-five million, eight hundred seventeen thousand, nine hundred ninety-nine".