12081289858 has 16 divisors (see below), whose sum is σ = 20451087360. Its totient is φ = 5302133200.

The previous prime is 12081289811. The next prime is 12081289861. The reversal of 12081289858 is 85898218021.

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, 9467458 + ... + 9468733.

It is an arithmetic number, because the mean of its divisors is an integer number (1278192960).

Almost surely, 2^12081289858 is an apocalyptic number.

12081289858 is a deficient number, since it is larger than the sum of its proper divisors (8369797502).

12081289858 is a wasteful number, since it uses less digits than its factorization.

12081289858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18936233.

The product of its (nonzero) digits is 737280, while the sum is 52.

The spelling of 12081289858 in words is "twelve billion, eighty-one million, two hundred eighty-nine thousand, eight hundred fifty-eight".