11791055809 has 36 divisors (see below), whose sum is σ = 13374518400. Its totient is φ = 10388308320.

The previous prime is 11791055767. The next prime is 11791055813. The reversal of 11791055809 is 90855019711.

It is not a de Polignac number, because 11791055809 - 2⁷ = 11791055681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11791055609) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12829852 + ... + 12830770.

It is an arithmetic number, because the mean of its divisors is an integer number (371514400).

Almost surely, 2^11791055809 is an apocalyptic number.

It is an amenable number.

11791055809 is a deficient number, since it is larger than the sum of its proper divisors (1583462591).

11791055809 is an equidigital number, since it uses as much as digits as its factorization.

11791055809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 46.

The spelling of 11791055809 in words is "eleven billion, seven hundred ninety-one million, fifty-five thousand, eight hundred nine".