115999792128 has 792 divisors, whose sum is σ = 405174828240. Its totient is φ = 31791513600.

The previous prime is 115999792109. The next prime is 115999792151. The reversal of 115999792128 is 821297999511.

115999792128 is a `hidden beast` number, since 11 + 599 + 9 + 7 + 9 + 2 + 1 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (792).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 549761943 + ... + 549762153.

Almost surely, 2^115999792128 is an apocalyptic number.

115999792128 is a gapful number since it is divisible by the number (18) 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 115999792128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202587414120).

115999792128 is an abundant number, since it is smaller than the sum of its proper divisors (289175036112).

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

115999792128 is a wasteful number, since it uses less digits than its factorization.

115999792128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 273 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 63.

The spelling of 115999792128 in words is "one hundred fifteen billion, nine hundred ninety-nine million, seven hundred ninety-two thousand, one hundred twenty-eight".