12886428371251 has 4 divisors (see below), whose sum is σ = 12886471995904. Its totient is φ = 12886384746600.

The previous prime is 12886428371239. The next prime is 12886428371263. The reversal of 12886428371251 is 15217382468821.

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

It is an interprime number because it is at equal distance from previous prime (12886428371239) and next prime (12886428371263).

It is a cyclic number.

It is not a de Polignac number, because 12886428371251 - 2³¹ = 12884280887603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12886428371851) 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, 21366195 + ... + 21961036.

It is an arithmetic number, because the mean of its divisors is an integer number (3221617998976).

Almost surely, 2^{12886428371251} is an apocalyptic number.

12886428371251 is a deficient number, since it is larger than the sum of its proper divisors (43624653).

12886428371251 is an equidigital number, since it uses as much as digits as its factorization.

12886428371251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43624652.

The product of its digits is 10321920, while the sum is 58.

The spelling of 12886428371251 in words is "twelve trillion, eight hundred eighty-six billion, four hundred twenty-eight million, three hundred seventy-one thousand, two hundred fifty-one".