118165172400 has 360 divisors, whose sum is σ = 470892152640. Its totient is φ = 27138240000.

The previous prime is 118165172399. The next prime is 118165172401. The reversal of 118165172400 is 4271561811.

118165172400 is a `hidden beast` number, since 1 + 1 + 81 + 6 + 5 + 172 + 400 = 666.

It is an interprime number because it is at equal distance from previous prime (118165172399) and next prime (118165172401).

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (118165172401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 673875 + ... + 830925.

Almost surely, 2^118165172400 is an apocalyptic number.

118165172400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118165172400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235446076320).

118165172400 is an abundant number, since it is smaller than the sum of its proper divisors (352726980240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118165172400 is a wasteful number, since it uses less digits than its factorization.

118165172400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157105 (or 157091 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 118165172400 in words is "one hundred eighteen billion, one hundred sixty-five million, one hundred seventy-two thousand, four hundred".