65707997937313 has 2 divisors, whose sum is σ = 65707997937314. Its totient is φ = 65707997937312.

The previous prime is 65707997937299. The next prime is 65707997937317. The reversal of 65707997937313 is 31373979970756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44359236434529 + 21348761502784 = 6660273^2 + 4620472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65707997937313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65707997937313.

It is not a weakly prime, because it can be changed into another prime (65707997937317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32853998968656 + 32853998968657.

It is an arithmetic number, because the mean of its divisors is an integer number (32853998968657).

Almost surely, 2^{65707997937313} is an apocalyptic number.

It is an amenable number.

65707997937313 is a deficient number, since it is larger than the sum of its proper divisors (1).

65707997937313 is an equidigital number, since it uses as much as digits as its factorization.

65707997937313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1417766490, while the sum is 76.

The spelling of 65707997937313 in words is "sixty-five trillion, seven hundred seven billion, nine hundred ninety-seven million, nine hundred thirty-seven thousand, three hundred thirteen".