9915668596511 has 2 divisors, whose sum is σ = 9915668596512. Its totient is φ = 9915668596510.

The previous prime is 9915668596489. The next prime is 9915668596529. The reversal of 9915668596511 is 1156958665199.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9915668596511 - 2⁶ = 9915668596447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9915668596571) 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, 4957834298255 + 4957834298256.

It is an arithmetic number, because the mean of its divisors is an integer number (4957834298256).

Almost surely, 2^{9915668596511} is an apocalyptic number.

9915668596511 is a deficient number, since it is larger than the sum of its proper divisors (1).

9915668596511 is an equidigital number, since it uses as much as digits as its factorization.

9915668596511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464000, while the sum is 71.

The spelling of 9915668596511 in words is "nine trillion, nine hundred fifteen billion, six hundred sixty-eight million, five hundred ninety-six thousand, five hundred eleven".