116518777 has 4 divisors (see below), whose sum is σ = 119228560. Its totient is φ = 113808996.

The previous prime is 116518763. The next prime is 116518789. The reversal of 116518777 is 777815611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 777815611 = 149 ⋅5220239.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116518777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2709739 = 116518777 / (1 + 1 + 6 + 5 + 1 + 8 + 7 + 7 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116518747) 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 3 ways as a sum of consecutive naturals, for example, 1354827 + ... + 1354912.

It is an arithmetic number, because the mean of its divisors is an integer number (29807140).

Almost surely, 2^116518777 is an apocalyptic number.

It is an amenable number.

116518777 is a deficient number, since it is larger than the sum of its proper divisors (2709783).

116518777 is an equidigital number, since it uses as much as digits as its factorization.

116518777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709782.

The product of its digits is 82320, while the sum is 43.

The square root of 116518777 is about 10794.3863651437. The cubic root of 116518777 is about 488.4258479904.

The spelling of 116518777 in words is "one hundred sixteen million, five hundred eighteen thousand, seven hundred seventy-seven".