2111670504917 has 2 divisors, whose sum is σ = 2111670504918. Its totient is φ = 2111670504916.

The previous prime is 2111670504893. The next prime is 2111670504919. The reversal of 2111670504917 is 7194050761112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1918906480516 + 192764024401 = 1385246^2 + 439049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111670504917 - 2²⁶ = 2111603396053 is a prime.

Together with 2111670504919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111670504919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055835252458 + 1055835252459.

It is an arithmetic number, because the mean of its divisors is an integer number (1055835252459).

Almost surely, 2^{2111670504917} is an apocalyptic number.

It is an amenable number.

2111670504917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111670504917 is an equidigital number, since it uses as much as digits as its factorization.

2111670504917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 2111670504917 in words is "two trillion, one hundred eleven billion, six hundred seventy million, five hundred four thousand, nine hundred seventeen".