9915668596505 has 64 divisors (see below), whose sum is σ = 14468597664768. Its totient is φ = 6376627445760.

The previous prime is 9915668596489. The next prime is 9915668596511. The reversal of 9915668596505 is 5056958665199.

It is not a de Polignac number, because 9915668596505 - 2⁴ = 9915668596489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15047297 + ... + 15692433.

It is an arithmetic number, because the mean of its divisors is an integer number (226071838512).

Almost surely, 2^{9915668596505} is an apocalyptic number.

It is an amenable number.

9915668596505 is a deficient number, since it is larger than the sum of its proper divisors (4552929068263).

9915668596505 is a wasteful number, since it uses less digits than its factorization.

9915668596505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645546.

The product of its (nonzero) digits is 787320000, while the sum is 74.

The spelling of 9915668596505 in words is "nine trillion, nine hundred fifteen billion, six hundred sixty-eight million, five hundred ninety-six thousand, five hundred five".