10917569909 has 4 divisors (see below), whose sum is σ = 11212639404. Its totient is φ = 10622500416.

The previous prime is 10917569903. The next prime is 10917569933. The reversal of 10917569909 is 90996571901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90996571901 = 3557 ⋅25582393.

It can be written as a sum of positive squares in 2 ways, for example, as 9180514225 + 1737055684 = 95815^2 + 41678^2 .

It is a cyclic number.

It is not a de Polignac number, because 10917569909 - 2⁴ = 10917569893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10917569903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147534692 + ... + 147534765.

It is an arithmetic number, because the mean of its divisors is an integer number (2803159851).

Almost surely, 2^10917569909 is an apocalyptic number.

It is an amenable number.

10917569909 is a deficient number, since it is larger than the sum of its proper divisors (295069495).

10917569909 is an equidigital number, since it uses as much as digits as its factorization.

10917569909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295069494.

The product of its (nonzero) digits is 1377810, while the sum is 56.

The spelling of 10917569909 in words is "ten billion, nine hundred seventeen million, five hundred sixty-nine thousand, nine hundred nine".