8689894437679 has 32 divisors (see below), whose sum is σ = 11621329448960. Its totient is φ = 6303533529600.

The previous prime is 8689894437607. The next prime is 8689894437683. The reversal of 8689894437679 is 9767344989868.

It is a cyclic number.

It is not a de Polignac number, because 8689894437679 - 2²¹ = 8689892340527 is a prime.

It is a super-2 number, since 2×8689894437679² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8689894437679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8689894437379) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 81010362 + ... + 81117559.

It is an arithmetic number, because the mean of its divisors is an integer number (363166545280).

Almost surely, 2^{8689894437679} is an apocalyptic number.

8689894437679 is a deficient number, since it is larger than the sum of its proper divisors (2931435011281).

8689894437679 is a wasteful number, since it uses less digits than its factorization.

8689894437679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162127991.

The product of its digits is 31603654656, while the sum is 88.

The spelling of 8689894437679 in words is "eight trillion, six hundred eighty-nine billion, eight hundred ninety-four million, four hundred thirty-seven thousand, six hundred seventy-nine".