218698393104 has 45 divisors (see below), whose sum is σ = 612067458639. Its totient is φ = 72897593760.

The previous prime is 218698393091. The next prime is 218698393139. The reversal of 218698393104 is 401393896812.

The square root of 218698393104 is 467652.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5592339 + ... + 5631309.

Almost surely, 2^218698393104 is an apocalyptic number.

218698393104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

218698393104 is the 467652-nd square number.

It is an amenable number.

218698393104 is an abundant number, since it is smaller than the sum of its proper divisors (393369065535).

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

218698393104 is an frugal number, since it uses more digits than its factorization.

218698393104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77956 (or 38976 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 218698393104 in words is "two hundred eighteen billion, six hundred ninety-eight million, three hundred ninety-three thousand, one hundred four".