11578231845591 has 8 divisors (see below), whose sum is σ = 15596793414384. Its totient is φ = 7639245753600.

The previous prime is 11578231845581. The next prime is 11578231845673. The reversal of 11578231845591 is 19554813287511.

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

It is not a de Polignac number, because 11578231845591 - 2⁶ = 11578231845527 is a prime.

It is a super-3 number, since 3×11578231845591³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11578231845581) 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, 19893868860 + ... + 19893869441.

It is an arithmetic number, because the mean of its divisors is an integer number (1949599176798).

Almost surely, 2^{11578231845591} is an apocalyptic number.

11578231845591 is a deficient number, since it is larger than the sum of its proper divisors (4018561568793).

11578231845591 is an equidigital number, since it uses as much as digits as its factorization.

11578231845591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39787738401.

The product of its digits is 12096000, while the sum is 60.

The spelling of 11578231845591 in words is "eleven trillion, five hundred seventy-eight billion, two hundred thirty-one million, eight hundred forty-five thousand, five hundred ninety-one".