12818933274640 has 160 divisors (see below), whose sum is σ = 30660756871680. Its totient is φ = 4982539640832.

The previous prime is 12818933274629. The next prime is 12818933274647. The reversal of 12818933274640 is 4647233981821.

It is not an unprimeable number, because it can be changed into a prime (12818933274647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215425372 + ... + 215484868.

It is an arithmetic number, because the mean of its divisors is an integer number (191629730448).

Almost surely, 2^{12818933274640} is an apocalyptic number.

12818933274640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12818933274640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15330378435840).

12818933274640 is an abundant number, since it is smaller than the sum of its proper divisors (17841823597040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12818933274640 is a wasteful number, since it uses less digits than its factorization.

12818933274640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60129 (or 60123 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 12818933274640 in words is "twelve trillion, eight hundred eighteen billion, nine hundred thirty-three million, two hundred seventy-four thousand, six hundred forty".