6116788891 has 4 divisors (see below), whose sum is σ = 6117108984. Its totient is φ = 6116468800.

The previous prime is 6116788879. The next prime is 6116788949. The reversal of 6116788891 is 1988876116.

It is a happy number.

6116788891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6116788891 - 2⁵ = 6116788859 is a prime.

It is a super-2 number, since 2×6116788891² = 74830212674122019762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6116788801) 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, 129430 + ... + 170251.

It is an arithmetic number, because the mean of its divisors is an integer number (1529277246).

Almost surely, 2^6116788891 is an apocalyptic number.

6116788891 is a deficient number, since it is larger than the sum of its proper divisors (320093).

6116788891 is a wasteful number, since it uses less digits than its factorization.

6116788891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320092.

The product of its digits is 1161216, while the sum is 55.

The square root of 6116788891 is about 78209.9027681278. The cubic root of 6116788891 is about 1828.8348850813.

The spelling of 6116788891 in words is "six billion, one hundred sixteen million, seven hundred eighty-eight thousand, eight hundred ninety-one".