2116545229717 has 2 divisors, whose sum is σ = 2116545229718. Its totient is φ = 2116545229716.

The previous prime is 2116545229657. The next prime is 2116545229753. The reversal of 2116545229717 is 7179225456112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1271862917361 + 844682312356 = 1127769^2 + 919066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116545229717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116555229717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058272614858 + 1058272614859.

It is an arithmetic number, because the mean of its divisors is an integer number (1058272614859).

Almost surely, 2^{2116545229717} is an apocalyptic number.

It is an amenable number.

2116545229717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116545229717 is an equidigital number, since it uses as much as digits as its factorization.

2116545229717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 52.

The spelling of 2116545229717 in words is "two trillion, one hundred sixteen billion, five hundred forty-five million, two hundred twenty-nine thousand, seven hundred seventeen".