12005311139 has 8 divisors (see below), whose sum is σ = 12641039040. Its totient is φ = 11369970216.

The previous prime is 12005311117. The next prime is 12005311259. The reversal of 12005311139 is 93111350021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12005311139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12005311739) 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, 31937 + ... + 158210.

It is an arithmetic number, because the mean of its divisors is an integer number (1580129880).

Almost surely, 2^12005311139 is an apocalyptic number.

12005311139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12005311139 is a deficient number, since it is larger than the sum of its proper divisors (635727901).

12005311139 is a wasteful number, since it uses less digits than its factorization.

12005311139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193489.

The product of its (nonzero) digits is 810, while the sum is 26.

The spelling of 12005311139 in words is "twelve billion, five million, three hundred eleven thousand, one hundred thirty-nine".