9685742475869 has 2 divisors, whose sum is σ = 9685742475870. Its totient is φ = 9685742475868.

The previous prime is 9685742475859. The next prime is 9685742475967.

9685742475869 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9681818079844 + 3924396025 = 3111562^2 + 62645^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9685742475869 is a prime.

It is a super-2 number, since 2×9685742475869² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9685742475793 and 9685742475802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9685742475809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4842871237934 + 4842871237935.

It is an arithmetic number, because the mean of its divisors is an integer number (4842871237935).

Almost surely, 2^{9685742475869} is an apocalyptic number.

It is an amenable number.

9685742475869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9685742475869 is an equidigital number, since it uses as much as digits as its factorization.

9685742475869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7315660800, while the sum is 80.

It can be divided in two parts, 968574 and 2475869, that added together give a palindrome (3444443).

The spelling of 9685742475869 in words is "nine trillion, six hundred eighty-five billion, seven hundred forty-two million, four hundred seventy-five thousand, eight hundred sixty-nine".