9707707800257 has 2 divisors, whose sum is σ = 9707707800258. Its totient is φ = 9707707800256.

The previous prime is 9707707800223. The next prime is 9707707800283. The reversal of 9707707800257 is 7520087077079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7426447972801 + 2281259827456 = 2725151^2 + 1510384^2 .

It is a cyclic number.

It is not a de Polignac number, because 9707707800257 - 2³² = 9703412832961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9707707800196 and 9707707800205.

It is not a weakly prime, because it can be changed into another prime (9707707400257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4853853900128 + 4853853900129.

It is an arithmetic number, because the mean of its divisors is an integer number (4853853900129).

Almost surely, 2^{9707707800257} is an apocalyptic number.

It is an amenable number.

9707707800257 is a deficient number, since it is larger than the sum of its proper divisors (1).

9707707800257 is an equidigital number, since it uses as much as digits as its factorization.

9707707800257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12101040, while the sum is 59.

The spelling of 9707707800257 in words is "nine trillion, seven hundred seven billion, seven hundred seven million, eight hundred thousand, two hundred fifty-seven".