11545854566 has 8 divisors (see below), whose sum is σ = 17319249360. Its totient is φ = 5772771448.

The previous prime is 11545854557. The next prime is 11545854587. The reversal of 11545854566 is 66545854511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73700 + ... + 168888.

It is an arithmetic number, because the mean of its divisors is an integer number (2164906170).

Almost surely, 2^11545854566 is an apocalyptic number.

11545854566 is a deficient number, since it is larger than the sum of its proper divisors (5773394794).

11545854566 is an equidigital number, since it uses as much as digits as its factorization.

11545854566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155838.

The product of its digits is 2880000, while the sum is 50.

Subtracting 11545854566 from its reverse (66545854511), we obtain a palindrome (54999999945).

The spelling of 11545854566 in words is "eleven billion, five hundred forty-five million, eight hundred fifty-four thousand, five hundred sixty-six".