8744876743681 has 4 divisors (see below), whose sum is σ = 9417559570132. Its totient is φ = 8072193917232.

The previous prime is 8744876743637. The next prime is 8744876743717. The reversal of 8744876743681 is 1863476784478.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1822500000000 + 6922376743681 = 1350000^2 + 2631041^2 .

It is a cyclic number.

It is not a de Polignac number, because 8744876743681 - 2¹⁹ = 8744876219393 is a prime.

It is a super-2 number, since 2×8744876743681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8744876743481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336341413206 + ... + 336341413231.

It is an arithmetic number, because the mean of its divisors is an integer number (2354389892533).

Almost surely, 2^{8744876743681} is an apocalyptic number.

It is an amenable number.

8744876743681 is a deficient number, since it is larger than the sum of its proper divisors (672682826451).

8744876743681 is a wasteful number, since it uses less digits than its factorization.

8744876743681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672682826450.

The product of its digits is 1213857792, while the sum is 73.

The spelling of 8744876743681 in words is "eight trillion, seven hundred forty-four billion, eight hundred seventy-six million, seven hundred forty-three thousand, six hundred eighty-one".