115559831040 has 640 divisors, whose sum is σ = 422561525760. Its totient is φ = 26765426688.

The previous prime is 115559831029. The next prime is 115559831083. The reversal of 115559831040 is 40138955511.

It is a tau number, because it is divible by the number of its divisors (640).

It is a junction number, because it is equal to n+sod(n) for n = 115559830983 and 115559831001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87082857 + ... + 87084183.

It is an arithmetic number, because the mean of its divisors is an integer number (660252384).

Almost surely, 2^115559831040 is an apocalyptic number.

115559831040 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 115559831040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211280762880).

115559831040 is an abundant number, since it is smaller than the sum of its proper divisors (307001694720).

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

115559831040 is a wasteful number, since it uses less digits than its factorization.

115559831040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 42.

The spelling of 115559831040 in words is "one hundred fifteen billion, five hundred fifty-nine million, eight hundred thirty-one thousand, forty".