118771242165 has 64 divisors (see below), whose sum is σ = 216410503680. Its totient is φ = 61767774720.

The previous prime is 118771242157. The next prime is 118771242167. The reversal of 118771242165 is 561242177811.

118771242165 is a `hidden beast` number, since 1 + 187 + 71 + 242 + 165 = 666.

It is not a de Polignac number, because 118771242165 - 2³ = 118771242157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 118771242165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118771242167) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13849819 + ... + 13858391.

It is an arithmetic number, because the mean of its divisors is an integer number (3381414120).

Almost surely, 2^118771242165 is an apocalyptic number.

118771242165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118771242165 is a deficient number, since it is larger than the sum of its proper divisors (97639261515).

118771242165 is a wasteful number, since it uses less digits than its factorization.

118771242165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131 (or 11125 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The spelling of 118771242165 in words is "one hundred eighteen billion, seven hundred seventy-one million, two hundred forty-two thousand, one hundred sixty-five".