12986456785 has 8 divisors (see below), whose sum is σ = 15729391296. Its totient is φ = 10292070000.

The previous prime is 12986456773. The next prime is 12986456797. The reversal of 12986456785 is 58765468921.

It is an interprime number because it is at equal distance from previous prime (12986456773) and next prime (12986456797).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12986456785 - 2⁵ = 12986456753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12136341 + ... + 12137410.

It is an arithmetic number, because the mean of its divisors is an integer number (1966173912).

Almost surely, 2^12986456785 is an apocalyptic number.

It is an amenable number.

12986456785 is a deficient number, since it is larger than the sum of its proper divisors (2742934511).

12986456785 is a wasteful number, since it uses less digits than its factorization.

12986456785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24273863.

The product of its digits is 29030400, while the sum is 61.

The spelling of 12986456785 in words is "twelve billion, nine hundred eighty-six million, four hundred fifty-six thousand, seven hundred eighty-five".