12946194277 has 2 divisors, whose sum is σ = 12946194278. Its totient is φ = 12946194276.

The previous prime is 12946194221. The next prime is 12946194319. The reversal of 12946194277 is 77249164921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12507961921 + 438232356 = 111839^2 + 20934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12946194277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12946194077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473097138 + 6473097139.

It is an arithmetic number, because the mean of its divisors is an integer number (6473097139).

Almost surely, 2^12946194277 is an apocalyptic number.

It is an amenable number.

12946194277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12946194277 is an equidigital number, since it uses as much as digits as its factorization.

12946194277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The spelling of 12946194277 in words is "twelve billion, nine hundred forty-six million, one hundred ninety-four thousand, two hundred seventy-seven".