8440080233521 has 4 divisors (see below), whose sum is σ = 8441532171252. Its totient is φ = 8438628295792.

The previous prime is 8440080233503. The next prime is 8440080233539. The reversal of 8440080233521 is 1253320800448.

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

It is an interprime number because it is at equal distance from previous prime (8440080233503) and next prime (8440080233539).

It can be written as a sum of positive squares in 2 ways, for example, as 2723701332496 + 5716378901025 = 1650364^2 + 2390895^2 .

It is a cyclic number.

It is not a de Polignac number, because 8440080233521 - 2²⁵ = 8440046679089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8440080263521) 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, 725960146 + ... + 725971771.

It is an arithmetic number, because the mean of its divisors is an integer number (2110383042813).

Almost surely, 2^{8440080233521} is an apocalyptic number.

It is an amenable number.

8440080233521 is a deficient number, since it is larger than the sum of its proper divisors (1451937731).

8440080233521 is a wasteful number, since it uses less digits than its factorization.

8440080233521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451937730.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 8440080233521 in words is "eight trillion, four hundred forty billion, eighty million, two hundred thirty-three thousand, five hundred twenty-one".