12986028787 has 4 divisors (see below), whose sum is σ = 13337002576. Its totient is φ = 12635055000.

The previous prime is 12986028779. The next prime is 12986028791. The reversal of 12986028787 is 78782068921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78782068921 = 237967 ⋅331063.

It is a cyclic number.

It is not a de Polignac number, because 12986028787 - 2³ = 12986028779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12986026787) 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, 175486839 + ... + 175486912.

It is an arithmetic number, because the mean of its divisors is an integer number (3334250644).

Almost surely, 2^12986028787 is an apocalyptic number.

12986028787 is a deficient number, since it is larger than the sum of its proper divisors (350973789).

12986028787 is an equidigital number, since it uses as much as digits as its factorization.

12986028787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350973788.

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 12986028787 in words is "twelve billion, nine hundred eighty-six million, twenty-eight thousand, seven hundred eighty-seven".