115718817512 has 16 divisors (see below), whose sum is σ = 218629065600. Its totient is φ = 57417733360.

The previous prime is 115718817493. The next prime is 115718817541. The reversal of 115718817512 is 215718817511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55208312 + ... + 55210407.

It is an arithmetic number, because the mean of its divisors is an integer number (13664316600).

Almost surely, 2^115718817512 is an apocalyptic number.

It is an amenable number.

115718817512 is a deficient number, since it is larger than the sum of its proper divisors (102910248088).

115718817512 is a wasteful number, since it uses less digits than its factorization.

115718817512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110418856 (or 110418852 counting only the distinct ones).

The product of its digits is 156800, while the sum is 47.

Subtracting 115718817512 from its reverse (215718817511), we obtain a palindrome (99999999999).

The spelling of 115718817512 in words is "one hundred fifteen billion, seven hundred eighteen million, eight hundred seventeen thousand, five hundred twelve".