12971763737 has 2 divisors, whose sum is σ = 12971763738. Its totient is φ = 12971763736.

The previous prime is 12971763677. The next prime is 12971763751. The reversal of 12971763737 is 73736717921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8504712841 + 4467050896 = 92221^2 + 66836^2 .

It is a cyclic number.

It is not a de Polignac number, because 12971763737 - 2¹⁸ = 12971501593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12971763757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6485881868 + 6485881869.

It is an arithmetic number, because the mean of its divisors is an integer number (6485881869).

Almost surely, 2^12971763737 is an apocalyptic number.

It is an amenable number.

12971763737 is a deficient number, since it is larger than the sum of its proper divisors (1).

12971763737 is an equidigital number, since it uses as much as digits as its factorization.

12971763737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2333772, while the sum is 53.

The spelling of 12971763737 in words is "twelve billion, nine hundred seventy-one million, seven hundred sixty-three thousand, seven hundred thirty-seven".