11446813571 has 4 divisors (see below), whose sum is σ = 11456220552. Its totient is φ = 11437406592.

The previous prime is 11446813523. The next prime is 11446813577. The reversal of 11446813571 is 17531864411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17531864411 = 43 ⋅407717777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11446813571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11446813577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4701665 + ... + 4704098.

It is an arithmetic number, because the mean of its divisors is an integer number (2864055138).

Almost surely, 2^11446813571 is an apocalyptic number.

11446813571 is a deficient number, since it is larger than the sum of its proper divisors (9406981).

11446813571 is an equidigital number, since it uses as much as digits as its factorization.

11446813571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9406980.

The product of its digits is 80640, while the sum is 41.

The spelling of 11446813571 in words is "eleven billion, four hundred forty-six million, eight hundred thirteen thousand, five hundred seventy-one".