115611515115 has 32 divisors (see below), whose sum is σ = 195328523520. Its totient is φ = 58229921664.

The previous prime is 115611515059. The next prime is 115611515197. The reversal of 115611515115 is 511515116511.

It is not a de Polignac number, because 115611515115 - 2¹² = 115611511019 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549489 + ... + 730178.

It is an arithmetic number, because the mean of its divisors is an integer number (6104016360).

Almost surely, 2^115611515115 is an apocalyptic number.

115611515115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115611515115 is a deficient number, since it is larger than the sum of its proper divisors (79717008405).

115611515115 is a wasteful number, since it uses less digits than its factorization.

115611515115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280011.

The product of its digits is 3750, while the sum is 33.

The spelling of 115611515115 in words is "one hundred fifteen billion, six hundred eleven million, five hundred fifteen thousand, one hundred fifteen".