218786863104 has 120 divisors (see below), whose sum is σ = 653500427580. Its totient is φ = 72928899072.

The previous prime is 218786863079. The next prime is 218786863111. The reversal of 218786863104 is 401368687812.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 493554 + ... + 825329.

Almost surely, 2^218786863104 is an apocalyptic number.

218786863104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

218786863104 is an abundant number, since it is smaller than the sum of its proper divisors (434713564476).

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

218786863104 is an equidigital number, since it uses as much as digits as its factorization.

218786863104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318917 (or 1318888 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 218786863104 in words is "two hundred eighteen billion, seven hundred eighty-six million, eight hundred sixty-three thousand, one hundred four".