12020045839 has 4 divisors (see below), whose sum is σ = 12132382824. Its totient is φ = 11907708856.

The previous prime is 12020045827. The next prime is 12020045861. The reversal of 12020045839 is 93854002021.

12020045839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020045839 - 2¹³ = 12020037647 is a prime.

It is a super-2 number, since 2×12020045839² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020045819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56168332 + ... + 56168545.

It is an arithmetic number, because the mean of its divisors is an integer number (3033095706).

Almost surely, 2^12020045839 is an apocalyptic number.

12020045839 is a deficient number, since it is larger than the sum of its proper divisors (112336985).

12020045839 is a wasteful number, since it uses less digits than its factorization.

12020045839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112336984.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 12020045839 in words is "twelve billion, twenty million, forty-five thousand, eight hundred thirty-nine".