12549113818 has 8 divisors (see below), whose sum is σ = 19061945280. Its totient is φ = 6195132060.

The previous prime is 12549113761. The next prime is 12549113821. The reversal of 12549113818 is 81831194521.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39712228 + ... + 39712543.

It is an arithmetic number, because the mean of its divisors is an integer number (2382743160).

Almost surely, 2^12549113818 is an apocalyptic number.

12549113818 is a deficient number, since it is larger than the sum of its proper divisors (6512831462).

12549113818 is an equidigital number, since it uses as much as digits as its factorization.

12549113818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79424852.

The product of its digits is 69120, while the sum is 43.

The spelling of 12549113818 in words is "twelve billion, five hundred forty-nine million, one hundred thirteen thousand, eight hundred eighteen".