115161661200 has 120 divisors (see below), whose sum is σ = 369891636928. Its totient is φ = 30627325440.

The previous prime is 115161661187. The next prime is 115161661231. The reversal of 115161661200 is 2166161511.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318957 + ... + 576243.

Almost surely, 2^115161661200 is an apocalyptic number.

115161661200 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 115161661200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184945818464).

115161661200 is an abundant number, since it is smaller than the sum of its proper divisors (254729975728).

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

115161661200 is a wasteful number, since it uses less digits than its factorization.

115161661200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257681 (or 257670 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 115161661200 in words is "one hundred fifteen billion, one hundred sixty-one million, six hundred sixty-one thousand, two hundred".