216312266722 has 8 divisors (see below), whose sum is σ = 324525451500. Its totient is φ = 108137116224.

The previous prime is 216312266701. The next prime is 216312266741. The reversal of 216312266722 is 227662213612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 133050587121 + 83261679601 = 364761^2 + 288551^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9494347 + ... + 9517102.

Almost surely, 2^216312266722 is an apocalyptic number.

216312266722 is a deficient number, since it is larger than the sum of its proper divisors (108213184778).

216312266722 is a wasteful number, since it uses less digits than its factorization.

216312266722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19017140.

The product of its digits is 145152, while the sum is 40.

The spelling of 216312266722 in words is "two hundred sixteen billion, three hundred twelve million, two hundred sixty-six thousand, seven hundred twenty-two".