216528224066857 has 8 divisors (see below), whose sum is σ = 219879865094400. Its totient is φ = 213191852475264.

The previous prime is 216528224066789. The next prime is 216528224066879. The reversal of 216528224066857 is 758660422825612.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216528224066857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216528224066887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3817330408 + ... + 3817387129.

It is an arithmetic number, because the mean of its divisors is an integer number (27484983136800).

Almost surely, 2^{216528224066857} is an apocalyptic number.

It is an amenable number.

216528224066857 is a deficient number, since it is larger than the sum of its proper divisors (3351641027543).

216528224066857 is an equidigital number, since it uses as much as digits as its factorization.

216528224066857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634717975.

The product of its (nonzero) digits is 154828800, while the sum is 64.

The spelling of 216528224066857 in words is "two hundred sixteen trillion, five hundred twenty-eight billion, two hundred twenty-four million, sixty-six thousand, eight hundred fifty-seven".