2116665767 has 6 divisors (see below), whose sum is σ = 2248499928. Its totient is φ = 1992155744.

The previous prime is 2116665763. The next prime is 2116665773. The reversal of 2116665767 is 7675666112.

It is not a de Polignac number, because 2116665767 - 2² = 2116665763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116665763) 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 5 ways as a sum of consecutive naturals, for example, 3661763 + ... + 3662340.

It is an arithmetic number, because the mean of its divisors is an integer number (374749988).

Almost surely, 2^2116665767 is an apocalyptic number.

2116665767 is a deficient number, since it is larger than the sum of its proper divisors (131834161).

2116665767 is an equidigital number, since it uses as much as digits as its factorization.

2116665767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7324137 (or 7324120 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 2116665767 is about 46007.2360286944. The cubic root of 2116665767 is about 1283.9578355848.

The spelling of 2116665767 in words is "two billion, one hundred sixteen million, six hundred sixty-five thousand, seven hundred sixty-seven".