216676322806672 has 40 divisors (see below), whose sum is σ = 420366404828160. Its totient is φ = 108194725624320.

The previous prime is 216676322806613. The next prime is 216676322806729. The reversal of 216676322806672 is 276608223676612.

It is a happy number.

It is a super-2 number, since 2×216676322806672² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60622353 + ... + 64096975.

It is an arithmetic number, because the mean of its divisors is an integer number (10509160120704).

Almost surely, 2^{216676322806672} is an apocalyptic number.

It is an amenable number.

216676322806672 is a deficient number, since it is larger than the sum of its proper divisors (203690082021488).

216676322806672 is a wasteful number, since it uses less digits than its factorization.

216676322806672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479791 (or 3479785 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 64.

The spelling of 216676322806672 in words is "two hundred sixteen trillion, six hundred seventy-six billion, three hundred twenty-two million, eight hundred six thousand, six hundred seventy-two".