218243342812 has 12 divisors (see below), whose sum is σ = 416646381816. Its totient is φ = 99201519440.

The previous prime is 218243342773. The next prime is 218243342833.

218243342812 is nontrivially palindromic in base 10.

It is a congruent number.

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, 2480037943 + ... + 2480038030.

It is an arithmetic number, because the mean of its divisors is an integer number (34720531818).

Almost surely, 2^218243342812 is an apocalyptic number.

218243342812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218243342812 is a deficient number, since it is larger than the sum of its proper divisors (198403039004).

218243342812 is a wasteful number, since it uses less digits than its factorization.

218243342812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960075988 (or 4960075986 counting only the distinct ones).

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

The spelling of 218243342812 in words is "two hundred eighteen billion, two hundred forty-three million, three hundred forty-two thousand, eight hundred twelve".