12887402813 has 4 divisors (see below), whose sum is σ = 12922518720. Its totient is φ = 12852286908.

The previous prime is 12887402797. The next prime is 12887402837. The reversal of 12887402813 is 31820478821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31820478821 = 11909 ⋅2671969.

It is a cyclic number.

It is not a de Polignac number, because 12887402813 - 2⁴ = 12887402797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887402873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17557403 + ... + 17558136.

It is an arithmetic number, because the mean of its divisors is an integer number (3230629680).

Almost surely, 2^12887402813 is an apocalyptic number.

It is an amenable number.

12887402813 is a deficient number, since it is larger than the sum of its proper divisors (35115907).

12887402813 is an equidigital number, since it uses as much as digits as its factorization.

12887402813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35115906.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 12887402813 in words is "twelve billion, eight hundred eighty-seven million, four hundred two thousand, eight hundred thirteen".