11289443287 has 8 divisors (see below), whose sum is σ = 11668559616. Its totient is φ = 10916115192.

The previous prime is 11289443273. The next prime is 11289443309. The reversal of 11289443287 is 78234498211.

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

It is a cyclic number.

It is not a de Polignac number, because 11289443287 - 2³¹ = 9141959639 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 11289443287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11289443267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1443093 + ... + 1450894.

It is an arithmetic number, because the mean of its divisors is an integer number (1458569952).

Almost surely, 2^11289443287 is an apocalyptic number.

11289443287 is a deficient number, since it is larger than the sum of its proper divisors (379116329).

11289443287 is an equidigital number, since it uses as much as digits as its factorization.

11289443287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894117.

The product of its digits is 774144, while the sum is 49.

The spelling of 11289443287 in words is "eleven billion, two hundred eighty-nine million, four hundred forty-three thousand, two hundred eighty-seven".