9963713257 has 2 divisors, whose sum is σ = 9963713258. Its totient is φ = 9963713256.

The previous prime is 9963713203. The next prime is 9963713269. The reversal of 9963713257 is 7523173699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8214884496 + 1748828761 = 90636^2 + 41819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9963713257 is a prime.

It is not a weakly prime, because it can be changed into another prime (9963713057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4981856628 + 4981856629.

It is an arithmetic number, because the mean of its divisors is an integer number (4981856629).

Almost surely, 2^9963713257 is an apocalyptic number.

It is an amenable number.

9963713257 is a deficient number, since it is larger than the sum of its proper divisors (1).

9963713257 is an equidigital number, since it uses as much as digits as its factorization.

9963713257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 52.

The square root of 9963713257 is about 99818.4013947328. The cubic root of 9963713257 is about 2151.8256177277.

The spelling of 9963713257 in words is "nine billion, nine hundred sixty-three million, seven hundred thirteen thousand, two hundred fifty-seven".