115581794508 has 96 divisors (see below), whose sum is σ = 308672145600. Its totient is φ = 37374317568.

The previous prime is 115581794501. The next prime is 115581794543. The reversal of 115581794508 is 805497185511.

115581794508 is a `hidden beast` number, since 1 + 1 + 5 + 581 + 7 + 9 + 4 + 50 + 8 = 666.

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 (115581794501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1303738 + ... + 1389566.

It is an arithmetic number, because the mean of its divisors is an integer number (3215334850).

Almost surely, 2^115581794508 is an apocalyptic number.

115581794508 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 115581794508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154336072800).

115581794508 is an abundant number, since it is smaller than the sum of its proper divisors (193090351092).

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

115581794508 is a wasteful number, since it uses less digits than its factorization.

115581794508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86216 (or 86208 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 54.

The spelling of 115581794508 in words is "one hundred fifteen billion, five hundred eighty-one million, seven hundred ninety-four thousand, five hundred eight".