115512510111440 has 160 divisors (see below), whose sum is σ = 290202870160896. Its totient is φ = 42506686586880.

The previous prime is 115512510111433. The next prime is 115512510111461. The reversal of 115512510111440 is 44111015215511.

It is a junction number, because it is equal to n+sod(n) for n = 115512510111397 and 115512510111406.

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 31 ways as a sum of consecutive naturals, for example, 3509828585 + ... + 3509861495.

Almost surely, 2^{115512510111440} is an apocalyptic number.

115512510111440 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 115512510111440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145101435080448).

115512510111440 is an abundant number, since it is smaller than the sum of its proper divisors (174690360049456).

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

115512510111440 is a wasteful number, since it uses less digits than its factorization.

115512510111440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44237 (or 44231 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 32.

Adding to 115512510111440 its reverse (44111015215511), we get a palindrome (159623525326951).

The spelling of 115512510111440 in words is "one hundred fifteen trillion, five hundred twelve billion, five hundred ten million, one hundred eleven thousand, four hundred forty".