12936012818 has 4 divisors (see below), whose sum is σ = 19404019230. Its totient is φ = 6468006408.

The previous prime is 12936012811. The next prime is 12936012857. The reversal of 12936012818 is 81821063921.

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

It can be written as a sum of positive squares in only one way, i.e., 10018608649 + 2917404169 = 100093^2 + 54013^2 .

It is a super-2 number, since 2×12936012818² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12936012811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3234003203 + ... + 3234003206.

Almost surely, 2^12936012818 is an apocalyptic number.

12936012818 is a deficient number, since it is larger than the sum of its proper divisors (6468006412).

12936012818 is an equidigital number, since it uses as much as digits as its factorization.

12936012818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468006411.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 12936012818 in words is "twelve billion, nine hundred thirty-six million, twelve thousand, eight hundred eighteen".