116861836185 has 64 divisors (see below), whose sum is σ = 214287240960. Its totient is φ = 60380951040.

The previous prime is 116861836163. The next prime is 116861836207. The reversal of 116861836185 is 581638168611.

It is a happy number.

116861836185 is a `hidden beast` number, since 1 + 1 + 6 + 8 + 6 + 18 + 3 + 618 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (116861836163) and next prime (116861836207).

It is not a de Polignac number, because 116861836185 - 2⁵ = 116861836153 is a prime.

It is a super-4 number, since 4×116861836185⁴ (a number of 45 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1113630 + ... + 1214040.

It is an arithmetic number, because the mean of its divisors is an integer number (3348238140).

Almost surely, 2^116861836185 is an apocalyptic number.

116861836185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116861836185 is a deficient number, since it is larger than the sum of its proper divisors (97425404775).

116861836185 is a wasteful number, since it uses less digits than its factorization.

116861836185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100695 (or 100689 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 116861836185 in words is "one hundred sixteen billion, eight hundred sixty-one million, eight hundred thirty-six thousand, one hundred eighty-five".