972218968817 has 8 divisors (see below), whose sum is σ = 979932441600. Its totient is φ = 964506405744.

The previous prime is 972218968739. The next prime is 972218968843. The reversal of 972218968817 is 718869812279.

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

It is a cyclic number.

It is not a de Polignac number, because 972218968817 - 2⁸ = 972218968561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972218964817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005034 + ... + 2442252.

It is an arithmetic number, because the mean of its divisors is an integer number (122491555200).

Almost surely, 2^972218968817 is an apocalyptic number.

It is an amenable number.

972218968817 is a deficient number, since it is larger than the sum of its proper divisors (7713472783).

972218968817 is a wasteful number, since it uses less digits than its factorization.

972218968817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454855.

The product of its digits is 48771072, while the sum is 68.

The spelling of 972218968817 in words is "nine hundred seventy-two billion, two hundred eighteen million, nine hundred sixty-eight thousand, eight hundred seventeen".