115491656280 has 1024 divisors, whose sum is σ = 514186444800. Its totient is φ = 19934576640.

The previous prime is 115491656279. The next prime is 115491656309. The reversal of 115491656280 is 82656194511.

It is a super-3 number, since 3×115491656280³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 46965691 + ... + 46968149.

It is an arithmetic number, because the mean of its divisors is an integer number (502135200).

Almost surely, 2^115491656280 is an apocalyptic number.

115491656280 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 115491656280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257093222400).

115491656280 is an abundant number, since it is smaller than the sum of its proper divisors (398694788520).

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

115491656280 is a wasteful number, since it uses less digits than its factorization.

115491656280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544 (or 2540 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 115491656280 in words is "one hundred fifteen billion, four hundred ninety-one million, six hundred fifty-six thousand, two hundred eighty".