12936936949 has 2 divisors, whose sum is σ = 12936936950. Its totient is φ = 12936936948.

The previous prime is 12936936907. The next prime is 12936936953. The reversal of 12936936949 is 94963963921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10083774724 + 2853162225 = 100418^2 + 53415^2 .

It is an emirp because it is prime and its reverse (94963963921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12936936949 - 2¹³ = 12936928757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12936936979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6468468474 + 6468468475.

It is an arithmetic number, because the mean of its divisors is an integer number (6468468475).

Almost surely, 2^12936936949 is an apocalyptic number.

It is an amenable number.

12936936949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12936936949 is an equidigital number, since it uses as much as digits as its factorization.

12936936949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17006112, while the sum is 61.

The spelling of 12936936949 in words is "twelve billion, nine hundred thirty-six million, nine hundred thirty-six thousand, nine hundred forty-nine".