12116937709 has 2 divisors, whose sum is σ = 12116937710. Its totient is φ = 12116937708.

The previous prime is 12116937689. The next prime is 12116937719. The reversal of 12116937709 is 90773961121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6856336809 + 5260600900 = 82803^2 + 72530^2 .

It is a cyclic number.

It is not a de Polignac number, because 12116937709 - 2²⁷ = 11982719981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12116937719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058468854 + 6058468855.

It is an arithmetic number, because the mean of its divisors is an integer number (6058468855).

Almost surely, 2^12116937709 is an apocalyptic number.

It is an amenable number.

12116937709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12116937709 is an equidigital number, since it uses as much as digits as its factorization.

12116937709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The spelling of 12116937709 in words is "twelve billion, one hundred sixteen million, nine hundred thirty-seven thousand, seven hundred nine".