11836382691 has 32 divisors (see below), whose sum is σ = 18312652800. Its totient is φ = 6660501120.

The previous prime is 11836382687. The next prime is 11836382749. The reversal of 11836382691 is 19628363811.

It is not a de Polignac number, because 11836382691 - 2² = 11836382687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11836382691.

It is not an unprimeable number, because it can be changed into a prime (11836382641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636181 + ... + 654521.

It is an arithmetic number, because the mean of its divisors is an integer number (572270400).

Almost surely, 2^11836382691 is an apocalyptic number.

11836382691 is a deficient number, since it is larger than the sum of its proper divisors (6476270109).

11836382691 is a wasteful number, since it uses less digits than its factorization.

11836382691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18819.

The product of its digits is 373248, while the sum is 48.

The spelling of 11836382691 in words is "eleven billion, eight hundred thirty-six million, three hundred eighty-two thousand, six hundred ninety-one".