12812536218 has 8 divisors (see below), whose sum is σ = 25625072448. Its totient is φ = 4270845404.

The previous prime is 12812536207. The next prime is 12812536223. The reversal of 12812536218 is 81263521821.

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

12812536218 is an admirable number.

It is a super-2 number, since 2×12812536218² (a number of 21 digits) contains 22 as substring.

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, 1067711346 + ... + 1067711357.

It is an arithmetic number, because the mean of its divisors is an integer number (3203134056).

Almost surely, 2^12812536218 is an apocalyptic number.

12812536218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12812536218 is a wasteful number, since it uses less digits than its factorization.

12812536218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135422708.

The product of its digits is 46080, while the sum is 39.

The spelling of 12812536218 in words is "twelve billion, eight hundred twelve million, five hundred thirty-six thousand, two hundred eighteen".