218040434704 has 45 divisors (see below), whose sum is σ = 426829630591. Its totient is φ = 107902343840.

The previous prime is 218040434693. The next prime is 218040434747. The reversal of 218040434704 is 407434040812.

The square root of 218040434704 is 466948.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 199853199 + ... + 199854289.

Almost surely, 2^218040434704 is an apocalyptic number.

218040434704 is the 466948-th square number.

It is an amenable number.

218040434704 is a deficient number, since it is larger than the sum of its proper divisors (208789195887).

218040434704 is an frugal number, since it uses more digits than its factorization.

218040434704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The spelling of 218040434704 in words is "two hundred eighteen billion, forty million, four hundred thirty-four thousand, seven hundred four".