216672110618 has 4 divisors (see below), whose sum is σ = 325008165930. Its totient is φ = 108336055308.

The previous prime is 216672110563. The next prime is 216672110659. The reversal of 216672110618 is 816011276612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 210454315009 + 6217795609 = 458753^2 + 78853^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54168027653 + ... + 54168027656.

Almost surely, 2^216672110618 is an apocalyptic number.

216672110618 is a deficient number, since it is larger than the sum of its proper divisors (108336055312).

216672110618 is a wasteful number, since it uses less digits than its factorization.

216672110618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108336055311.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 216672110618 in words is "two hundred sixteen billion, six hundred seventy-two million, one hundred ten thousand, six hundred eighteen".