9913788896569 has 2 divisors, whose sum is σ = 9913788896570. Its totient is φ = 9913788896568.

The previous prime is 9913788896521. The next prime is 9913788896591. The reversal of 9913788896569 is 9656988873199.

9913788896569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9796148814400 + 117640082169 = 3129880^2 + 342987^2 .

It is an emirp because it is prime and its reverse (9656988873199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9913788896569 - 2⁷ = 9913788896441 is a prime.

It is a super-2 number, since 2×9913788896569² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9913788896569.

It is not a weakly prime, because it can be changed into another prime (9913788896369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956894448284 + 4956894448285.

It is an arithmetic number, because the mean of its divisors is an integer number (4956894448285).

Almost surely, 2^{9913788896569} is an apocalyptic number.

It is an amenable number.

9913788896569 is a deficient number, since it is larger than the sum of its proper divisors (1).

9913788896569 is an equidigital number, since it uses as much as digits as its factorization.

9913788896569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12697896960, while the sum is 88.

The spelling of 9913788896569 in words is "nine trillion, nine hundred thirteen billion, seven hundred eighty-eight million, eight hundred ninety-six thousand, five hundred sixty-nine".