115718817540 has 48 divisors (see below), whose sum is σ = 324541361088. Its totient is φ = 30808001664.

The previous prime is 115718817493. The next prime is 115718817541. The reversal of 115718817540 is 45718817511.

It is a self number, because there is not a number n which added to its sum of digits gives 115718817540.

It is not an unprimeable number, because it can be changed into a prime (115718817541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1536342 + ... + 1609901.

It is an arithmetic number, because the mean of its divisors is an integer number (6761278356).

Almost surely, 2^115718817540 is an apocalyptic number.

115718817540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115718817540 is an abundant number, since it is smaller than the sum of its proper divisors (208822543548).

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

115718817540 is a wasteful number, since it uses less digits than its factorization.

115718817540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146868 (or 3146866 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 48.

The spelling of 115718817540 in words is "one hundred fifteen billion, seven hundred eighteen million, eight hundred seventeen thousand, five hundred forty".