115856817480 has 160 divisors (see below), whose sum is σ = 391081462200. Its totient is φ = 30762353664.

The previous prime is 115856817467. The next prime is 115856817481. The reversal of 115856817480 is 84718658511.

115856817480 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 568 + 1 + 74 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 104079792996 + 11777024484 = 322614^2 + 108522^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (115856817481) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 678186 + ... + 831654.

Almost surely, 2^115856817480 is an apocalyptic number.

115856817480 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 115856817480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195540731100).

115856817480 is an abundant number, since it is smaller than the sum of its proper divisors (275224644720).

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

115856817480 is a wasteful number, since it uses less digits than its factorization.

115856817480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153725 (or 153712 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 54.

The spelling of 115856817480 in words is "one hundred fifteen billion, eight hundred fifty-six million, eight hundred seventeen thousand, four hundred eighty".