2108116697 has 4 divisors (see below), whose sum is σ = 2108559156. Its totient is φ = 2107674240.

The previous prime is 2108116693. The next prime is 2108116723. The reversal of 2108116697 is 7966118012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 372644416 + 1735472281 = 19304^2 + 41659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108116697 - 2² = 2108116693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2108116693) 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, 214004 + ... + 223637.

It is an arithmetic number, because the mean of its divisors is an integer number (527139789).

Almost surely, 2^2108116697 is an apocalyptic number.

It is an amenable number.

2108116697 is a deficient number, since it is larger than the sum of its proper divisors (442459).

2108116697 is an equidigital number, since it uses as much as digits as its factorization.

2108116697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442458.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 2108116697 is about 45914.2319656988. The cubic root of 2108116697 is about 1282.2268967957.

The spelling of 2108116697 in words is "two billion, one hundred eight million, one hundred sixteen thousand, six hundred ninety-seven".