12856536307 has 4 divisors (see below), whose sum is σ = 12858226960. Its totient is φ = 12854845656.

The previous prime is 12856536299. The next prime is 12856536317. The reversal of 12856536307 is 70363565821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70363565821 = 263867 ⋅266663.

It is a cyclic number.

It is not a de Polignac number, because 12856536307 - 2³ = 12856536299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12856536317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833868 + ... + 849145.

It is an arithmetic number, because the mean of its divisors is an integer number (3214556740).

Almost surely, 2^12856536307 is an apocalyptic number.

12856536307 is a deficient number, since it is larger than the sum of its proper divisors (1690653).

12856536307 is an equidigital number, since it uses as much as digits as its factorization.

12856536307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690652.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 12856536307 in words is "twelve billion, eight hundred fifty-six million, five hundred thirty-six thousand, three hundred seven".