8676491986657 has 16 divisors (see below), whose sum is σ = 9488686435200. Its totient is φ = 7868207289600.

The previous prime is 8676491986559. The next prime is 8676491986697. The reversal of 8676491986657 is 7566891946768.

It is a cyclic number.

It is not a de Polignac number, because 8676491986657 - 2³¹ = 8674344503009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8676491986697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29378907 + ... + 29672767.

It is an arithmetic number, because the mean of its divisors is an integer number (593042902200).

Almost surely, 2^{8676491986657} is an apocalyptic number.

It is an amenable number.

8676491986657 is a deficient number, since it is larger than the sum of its proper divisors (812194448543).

8676491986657 is a wasteful number, since it uses less digits than its factorization.

8676491986657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300504.

The product of its digits is 6584094720, while the sum is 82.

The spelling of 8676491986657 in words is "eight trillion, six hundred seventy-six billion, four hundred ninety-one million, nine hundred eighty-six thousand, six hundred fifty-seven".