9640574019697 has 2 divisors, whose sum is σ = 9640574019698. Its totient is φ = 9640574019696.

The previous prime is 9640574019667. The next prime is 9640574019707. The reversal of 9640574019697 is 7969104750469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9178936664976 + 461637354721 = 3029676^2 + 679439^2 .

It is a cyclic number.

It is not a de Polignac number, because 9640574019697 - 2³¹ = 9638426536049 is a prime.

It is not a weakly prime, because it can be changed into another prime (9640574019667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820287009848 + 4820287009849.

It is an arithmetic number, because the mean of its divisors is an integer number (4820287009849).

Almost surely, 2^{9640574019697} is an apocalyptic number.

It is an amenable number.

9640574019697 is a deficient number, since it is larger than the sum of its proper divisors (1).

9640574019697 is an equidigital number, since it uses as much as digits as its factorization.

9640574019697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102876480, while the sum is 67.

The spelling of 9640574019697 in words is "nine trillion, six hundred forty billion, five hundred seventy-four million, nineteen thousand, six hundred ninety-seven".