8489774956667 has 4 divisors (see below), whose sum is σ = 8489795783136. Its totient is φ = 8489754130200.

The previous prime is 8489774956639. The next prime is 8489774956697. The reversal of 8489774956667 is 7666594779848.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8489774956667 - 2¹⁶ = 8489774891131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8489774956697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9789308 + ... + 10621209.

It is an arithmetic number, because the mean of its divisors is an integer number (2122448945784).

Almost surely, 2^{8489774956667} is an apocalyptic number.

8489774956667 is a deficient number, since it is larger than the sum of its proper divisors (20826469).

8489774956667 is a wasteful number, since it uses less digits than its factorization.

8489774956667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20826468.

The product of its digits is 30725775360, while the sum is 86.

The spelling of 8489774956667 in words is "eight trillion, four hundred eighty-nine billion, seven hundred seventy-four million, nine hundred fifty-six thousand, six hundred sixty-seven".