216666802244474 has 8 divisors (see below), whose sum is σ = 326633370218400. Its totient is φ = 107789012171676.

The previous prime is 216666802244449. The next prime is 216666802244537. The reversal of 216666802244474 is 474442208666612.

216666802244474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272194474784 + ... + 272194475579.

It is an arithmetic number, because the mean of its divisors is an integer number (40829171277300).

Almost surely, 2^{216666802244474} is an apocalyptic number.

216666802244474 is a deficient number, since it is larger than the sum of its proper divisors (109966567973926).

216666802244474 is a wasteful number, since it uses less digits than its factorization.

216666802244474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544388950564.

The product of its (nonzero) digits is 148635648, while the sum is 62.

The spelling of 216666802244474 in words is "two hundred sixteen trillion, six hundred sixty-six billion, eight hundred two million, two hundred forty-four thousand, four hundred seventy-four".