11791589817 has 16 divisors (see below), whose sum is σ = 18386001920. Its totient is φ = 6581351952.

The previous prime is 11791589773. The next prime is 11791589851. The reversal of 11791589817 is 71898519711.

It is not a de Polignac number, because 11791589817 - 2¹² = 11791585721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11791589857) 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, 6528217 + ... + 6530022.

It is an arithmetic number, because the mean of its divisors is an integer number (1149125120).

Almost surely, 2^11791589817 is an apocalyptic number.

It is an amenable number.

11791589817 is a deficient number, since it is larger than the sum of its proper divisors (6594412103).

11791589817 is a wasteful number, since it uses less digits than its factorization.

11791589817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13058292.

The product of its digits is 1270080, while the sum is 57.

The spelling of 11791589817 in words is "eleven billion, seven hundred ninety-one million, five hundred eighty-nine thousand, eight hundred seventeen".