216444635044466 has 16 divisors (see below), whose sum is σ = 326559554754048. Its totient is φ = 107592119485200.

The previous prime is 216444635044447. The next prime is 216444635044523. The reversal of 216444635044466 is 664440536444612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166692020 + ... + 167985471.

It is an arithmetic number, because the mean of its divisors is an integer number (20409972172128).

Almost surely, 2^{216444635044466} is an apocalyptic number.

216444635044466 is a deficient number, since it is larger than the sum of its proper divisors (110114919709582).

216444635044466 is a wasteful number, since it uses less digits than its factorization.

216444635044466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334679377.

The product of its (nonzero) digits is 159252480, while the sum is 59.

The spelling of 216444635044466 in words is "two hundred sixteen trillion, four hundred forty-four billion, six hundred thirty-five million, forty-four thousand, four hundred sixty-six".