2649713306437 has 2 divisors, whose sum is σ = 2649713306438. Its totient is φ = 2649713306436.

The previous prime is 2649713306389. The next prime is 2649713306453. The reversal of 2649713306437 is 7346033179462.

It is a Cunningham number, because it is equal to 1627794²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2649713306436 + 1 = 1627794^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649713306437 - 2⁷ = 2649713306309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649713304437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324856653218 + 1324856653219.

It is an arithmetic number, because the mean of its divisors is an integer number (1324856653219).

Almost surely, 2^{2649713306437} is an apocalyptic number.

It is an amenable number.

2649713306437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649713306437 is an equidigital number, since it uses as much as digits as its factorization.

2649713306437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 55.

The spelling of 2649713306437 in words is "two trillion, six hundred forty-nine billion, seven hundred thirteen million, three hundred six thousand, four hundred thirty-seven".