11709090917 has 16 divisors (see below), whose sum is σ = 12524049600. Its totient is φ = 10914393600.

The previous prime is 11709090859. The next prime is 11709090919. The reversal of 11709090917 is 71909090711.

It is a cyclic number.

It is not a de Polignac number, because 11709090917 - 2⁸ = 11709090661 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 (11709090919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1177667 + ... + 1187567.

It is an arithmetic number, because the mean of its divisors is an integer number (782753100).

Almost surely, 2^11709090917 is an apocalyptic number.

It is an amenable number.

11709090917 is a deficient number, since it is larger than the sum of its proper divisors (814958683).

11709090917 is an equidigital number, since it uses as much as digits as its factorization.

11709090917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916.

The product of its (nonzero) digits is 35721, while the sum is 44.

It can be divided in two parts, 11 and 709090917, that multiplied together give a palindrome (7800000087).

The spelling of 11709090917 in words is "eleven billion, seven hundred nine million, ninety thousand, nine hundred seventeen".