9872664662789 has 8 divisors (see below), whose sum is σ = 10102312904640. Its totient is φ = 9643018756896.

The previous prime is 9872664662717. The next prime is 9872664662797.

It is a happy number.

9872664662789 is nontrivially palindromic in base 10.

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 9872664662789 - 2²⁰ = 9872663614213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872664662389) 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, 10298384 + ... + 11216150.

It is an arithmetic number, because the mean of its divisors is an integer number (1262789113080).

Almost surely, 2^{9872664662789} is an apocalyptic number.

It is an amenable number.

9872664662789 is a deficient number, since it is larger than the sum of its proper divisors (229648241851).

9872664662789 is a wasteful number, since it uses less digits than its factorization.

9872664662789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167979.

The product of its digits is 5267275776, while the sum is 80.

The spelling of 9872664662789 in words is "nine trillion, eight hundred seventy-two billion, six hundred sixty-four million, six hundred sixty-two thousand, seven hundred eighty-nine".