116161515 has 12 divisors (see below), whose sum is σ = 201346704. Its totient is φ = 61952784.

The previous prime is 116161511. The next prime is 116161553. The reversal of 116161515 is 515161611.

It is not a de Polignac number, because 116161515 - 2² = 116161511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116161511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1290639 + ... + 1290728.

It is an arithmetic number, because the mean of its divisors is an integer number (16778892).

Almost surely, 2^116161515 is an apocalyptic number.

116161515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

116161515 is a deficient number, since it is larger than the sum of its proper divisors (85185189).

116161515 is a wasteful number, since it uses less digits than its factorization.

116161515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581378 (or 2581375 counting only the distinct ones).

The product of its digits is 900, while the sum is 27.

The square root of 116161515 is about 10777.8251516714. The cubic root of 116161515 is about 487.9261441463.

It can be divided in two parts, 11616 and 1515, that added together give a palindrome (13131).

The spelling of 116161515 in words is "one hundred sixteen million, one hundred sixty-one thousand, five hundred fifteen".