12782680187 has 4 divisors (see below), whose sum is σ = 12798250656. Its totient is φ = 12767109720.

The previous prime is 12782680181. The next prime is 12782680231. The reversal of 12782680187 is 78108628721.

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

It is a cyclic number.

It is not a de Polignac number, because 12782680187 - 2¹⁶ = 12782614651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12782680181) 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, 7784003 + ... + 7785644.

It is an arithmetic number, because the mean of its divisors is an integer number (3199562664).

Almost surely, 2^12782680187 is an apocalyptic number.

12782680187 is a deficient number, since it is larger than the sum of its proper divisors (15570469).

12782680187 is an equidigital number, since it uses as much as digits as its factorization.

12782680187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570468.

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 12782680187 in words is "twelve billion, seven hundred eighty-two million, six hundred eighty thousand, one hundred eighty-seven".