116611115 has 4 divisors (see below), whose sum is σ = 139933344. Its totient is φ = 93288888.

The previous prime is 116611111. The next prime is 116611129. The reversal of 116611115 is 511116611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511116611 = 17 ⋅30065683.

It is a cyclic number.

It is not a de Polignac number, because 116611115 - 2² = 116611111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116611111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11661107 + ... + 11661116.

It is an arithmetic number, because the mean of its divisors is an integer number (34983336).

Almost surely, 2^116611115 is an apocalyptic number.

116611115 is a deficient number, since it is larger than the sum of its proper divisors (23322229).

116611115 is an equidigital number, since it uses as much as digits as its factorization.

116611115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23322228.

The product of its digits is 180, while the sum is 23.

The square root of 116611115 is about 10798.6626486802. The cubic root of 116611115 is about 488.5548353770.

Adding to 116611115 its reverse (511116611), we get a palindrome (627727726).

The spelling of 116611115 in words is "one hundred sixteen million, six hundred eleven thousand, one hundred fifteen".