12356856539 has 8 divisors (see below), whose sum is σ = 12402954240. Its totient is φ = 12310831656.

The previous prime is 12356856517. The next prime is 12356856563. The reversal of 12356856539 is 93565865321.

12356856539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-12356856539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12356856509) 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 7 ways as a sum of consecutive naturals, for example, 334424 + ... + 369530.

It is an arithmetic number, because the mean of its divisors is an integer number (1550369280).

Almost surely, 2^12356856539 is an apocalyptic number.

12356856539 is a deficient number, since it is larger than the sum of its proper divisors (46097701).

12356856539 is an equidigital number, since it uses as much as digits as its factorization.

12356856539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36409.

The product of its digits is 5832000, while the sum is 53.

The spelling of 12356856539 in words is "twelve billion, three hundred fifty-six million, eight hundred fifty-six thousand, five hundred thirty-nine".