12766199231 has 2 divisors, whose sum is σ = 12766199232. Its totient is φ = 12766199230.

The previous prime is 12766199203. The next prime is 12766199273. The reversal of 12766199231 is 13299166721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12766199231 - 2⁶ = 12766199167 is a prime.

It is a super-2 number, since 2×12766199231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12766199291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6383099615 + 6383099616.

It is an arithmetic number, because the mean of its divisors is an integer number (6383099616).

Almost surely, 2^12766199231 is an apocalyptic number.

12766199231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12766199231 is an equidigital number, since it uses as much as digits as its factorization.

12766199231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The spelling of 12766199231 in words is "twelve billion, seven hundred sixty-six million, one hundred ninety-nine thousand, two hundred thirty-one".