812243342218 has 64 divisors (see below), whose sum is σ = 1526558830848. Its totient is φ = 314886942720.

The previous prime is 812243342167. The next prime is 812243342341.

812243342218 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×812243342218² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32279530 + ... + 32304682.

It is an arithmetic number, because the mean of its divisors is an integer number (23852481732).

Almost surely, 2^812243342218 is an apocalyptic number.

812243342218 is a deficient number, since it is larger than the sum of its proper divisors (714315488630).

812243342218 is a wasteful number, since it uses less digits than its factorization.

812243342218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26207.

The product of its digits is 147456, while the sum is 40.

The spelling of 812243342218 in words is "eight hundred twelve billion, two hundred forty-three million, three hundred forty-two thousand, two hundred eighteen".