11801065591 has 8 divisors (see below), whose sum is σ = 13524503040. Its totient is φ = 10087020888.

The previous prime is 11801065553. The next prime is 11801065597. The reversal of 11801065591 is 19556010811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11801065591 - 2⁹ = 11801065079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11801065591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801065597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2345491 + ... + 2350516.

It is an arithmetic number, because the mean of its divisors is an integer number (1690562880).

Almost surely, 2^11801065591 is an apocalyptic number.

11801065591 is a deficient number, since it is larger than the sum of its proper divisors (1723437449).

11801065591 is an equidigital number, since it uses as much as digits as its factorization.

11801065591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696373.

The product of its (nonzero) digits is 10800, while the sum is 37.

The spelling of 11801065591 in words is "eleven billion, eight hundred one million, sixty-five thousand, five hundred ninety-one".