116515643 has 4 divisors (see below), whose sum is σ = 116537808. Its totient is φ = 116493480.

The previous prime is 116515601. The next prime is 116515667. The reversal of 116515643 is 346515611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116515643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116515043) by changing a digit.

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, 1778 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (29134452).

Almost surely, 2^116515643 is an apocalyptic number.

116515643 is a deficient number, since it is larger than the sum of its proper divisors (22165).

116515643 is an equidigital number, since it uses as much as digits as its factorization.

116515643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22164.

The product of its digits is 10800, while the sum is 32.

The square root of 116515643 is about 10794.2411961193. The cubic root of 116515643 is about 488.4214688955.

Subtracting from 116515643 its sum of digits (32), we obtain a palindrome (116515611).

The spelling of 116515643 in words is "one hundred sixteen million, five hundred fifteen thousand, six hundred forty-three".