115371215140 has 24 divisors (see below), whose sum is σ = 246850866360. Its totient is φ = 45277759488.

The previous prime is 115371215129. The next prime is 115371215143. The reversal of 115371215140 is 41512173511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17062629376 + 98308585764 = 130624^2 + 313542^2 .

It is not an unprimeable number, because it can be changed into a prime (115371215143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54419325 + ... + 54421444.

It is an arithmetic number, because the mean of its divisors is an integer number (10285452765).

Almost surely, 2^115371215140 is an apocalyptic number.

115371215140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115371215140 is an abundant number, since it is smaller than the sum of its proper divisors (131479651220).

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

115371215140 is a wasteful number, since it uses less digits than its factorization.

115371215140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108840831 (or 108840829 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 31.

Adding to 115371215140 its reverse (41512173511), we get a palindrome (156883388651).

The spelling of 115371215140 in words is "one hundred fifteen billion, three hundred seventy-one million, two hundred fifteen thousand, one hundred forty".