12784649993 has 8 divisors (see below), whose sum is σ = 12919630080. Its totient is φ = 12649834800.

The previous prime is 12784649989. The next prime is 12784650007. The reversal of 12784649993 is 39994648721.

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

It is a cyclic number.

It is not a de Polignac number, because 12784649993 - 2² = 12784649989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12784649093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117878 + ... + 198656.

It is an arithmetic number, because the mean of its divisors is an integer number (1614953760).

Almost surely, 2^12784649993 is an apocalyptic number.

It is an amenable number.

12784649993 is a deficient number, since it is larger than the sum of its proper divisors (134980087).

12784649993 is a wasteful number, since it uses less digits than its factorization.

12784649993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82447.

The product of its digits is 23514624, while the sum is 62.

The spelling of 12784649993 in words is "twelve billion, seven hundred eighty-four million, six hundred forty-nine thousand, nine hundred ninety-three".