216595298404 has 9 divisors (see below), whose sum is σ = 379043401107. Its totient is φ = 108297183804.

The previous prime is 216595298399. The next prime is 216595298411. The reversal of 216595298404 is 404892595612.

The square root of 216595298404 is 465398.

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

216595298404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 814447 + ... + 1047145.

Almost surely, 2^216595298404 is an apocalyptic number.

216595298404 is the 465398-th square number.

It is an amenable number.

216595298404 is a deficient number, since it is larger than the sum of its proper divisors (162448102703).

216595298404 is an frugal number, since it uses more digits than its factorization.

216595298404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465402 (or 232701 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 216595298404 in words is "two hundred sixteen billion, five hundred ninety-five million, two hundred ninety-eight thousand, four hundred four".