12784181099 has 8 divisors (see below), whose sum is σ = 13266743760. Its totient is φ = 12304400416.

The previous prime is 12784181093. The next prime is 12784181131. The reversal of 12784181099 is 99018148721.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12784181099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12784181093) 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, 686129 + ... + 704514.

It is an arithmetic number, because the mean of its divisors is an integer number (1658342970).

Almost surely, 2^12784181099 is an apocalyptic number.

12784181099 is a deficient number, since it is larger than the sum of its proper divisors (482562661).

12784181099 is a wasteful number, since it uses less digits than its factorization.

12784181099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390989.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 12784181099 in words is "twelve billion, seven hundred eighty-four million, one hundred eighty-one thousand, ninety-nine".