115215334144 has 72 divisors (see below), whose sum is σ = 232090926480. Its totient is φ = 57080721408.

The previous prime is 115215334139. The next prime is 115215334147. The reversal of 115215334144 is 441433512511.

It is not an unprimeable number, because it can be changed into a prime (115215334147) 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 7 ways as a sum of consecutive naturals, for example, 19817382 + ... + 19823194.

It is an arithmetic number, because the mean of its divisors is an integer number (3223485090).

Almost surely, 2^115215334144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115215334144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116045463240).

115215334144 is an abundant number, since it is smaller than the sum of its proper divisors (116875592336).

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

115215334144 is an equidigital number, since it uses as much as digits as its factorization.

115215334144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525 (or 6511 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

Adding to 115215334144 its reverse (441433512511), we get a palindrome (556648846655).

The spelling of 115215334144 in words is "one hundred fifteen billion, two hundred fifteen million, three hundred thirty-four thousand, one hundred forty-four".