11143640578 has 16 divisors (see below), whose sum is σ = 19109424960. Its totient is φ = 4774335696.

The previous prime is 11143640569. The next prime is 11143640593. The reversal of 11143640578 is 87504634111.

It is a self number, because there is not a number n which added to its sum of digits gives 11143640578.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79413 + ... + 169096.

It is an arithmetic number, because the mean of its divisors is an integer number (1194339060).

Almost surely, 2^11143640578 is an apocalyptic number.

11143640578 is a deficient number, since it is larger than the sum of its proper divisors (7965784382).

11143640578 is a wasteful number, since it uses less digits than its factorization.

11143640578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251721.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 11143640578 in words is "eleven billion, one hundred forty-three million, six hundred forty thousand, five hundred seventy-eight".