115870513500 has 768 divisors, whose sum is σ = 454663372800. Its totient is φ = 24914304000.

The previous prime is 115870513481. The next prime is 115870513553. The reversal of 115870513500 is 5315078511.

115870513500 is a `hidden beast` number, since 1 + 15 + 87 + 0 + 513 + 50 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 108390966 + ... + 108392034.

It is an arithmetic number, because the mean of its divisors is an integer number (592009600).

Almost surely, 2^115870513500 is an apocalyptic number.

115870513500 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 115870513500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227331686400).

115870513500 is an abundant number, since it is smaller than the sum of its proper divisors (338792859300).

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

115870513500 is a wasteful number, since it uses less digits than its factorization.

115870513500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 36.

The spelling of 115870513500 in words is "one hundred fifteen billion, eight hundred seventy million, five hundred thirteen thousand, five hundred".