218614416812 has 48 divisors (see below), whose sum is σ = 437157084672. Its totient is φ = 94688225280.

The previous prime is 218614416773. The next prime is 218614416829.

218614416812 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144533 + ... + 676844.

It is an arithmetic number, because the mean of its divisors is an integer number (9107439264).

Almost surely, 2^218614416812 is an apocalyptic number.

218614416812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218614416812 is a deficient number, since it is larger than the sum of its proper divisors (218542667860).

218614416812 is a wasteful number, since it uses less digits than its factorization.

218614416812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821678 (or 821676 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The spelling of 218614416812 in words is "two hundred eighteen billion, six hundred fourteen million, four hundred sixteen thousand, eight hundred twelve".