8639413212673 has 16 divisors (see below), whose sum is σ = 9060938871120. Its totient is φ = 8226158459904.

The previous prime is 8639413212667. The next prime is 8639413212701. The reversal of 8639413212673 is 3762123149368.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 287475051889 + 8351938160784 = 536167^2 + 2889972^2 .

It is a cyclic number.

It is not a de Polignac number, because 8639413212673 - 2¹⁷ = 8639413081601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8639413212613) 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, 16149915 + ... + 16676287.

It is an arithmetic number, because the mean of its divisors is an integer number (566308679445).

Almost surely, 2^{8639413212673} is an apocalyptic number.

It is an amenable number.

8639413212673 is a deficient number, since it is larger than the sum of its proper divisors (421525658447).

8639413212673 is a wasteful number, since it uses less digits than its factorization.

8639413212673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534228.

The product of its digits is 7838208, while the sum is 55.

The spelling of 8639413212673 in words is "eight trillion, six hundred thirty-nine billion, four hundred thirteen million, two hundred twelve thousand, six hundred seventy-three".