8179282521 has 12 divisors (see below), whose sum is σ = 11820758820. Its totient is φ = 5449975200.

The previous prime is 8179282487. The next prime is 8179282523. The reversal of 8179282521 is 1252829718.

It can be written as a sum of positive squares in 2 ways, for example, as 484484121 + 7694798400 = 22011^2 + 87720^2 .

It is not a de Polignac number, because 8179282521 - 2⁶ = 8179282457 is a prime.

It is a super-2 number, since 2×8179282521² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8179282523) 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 11 ways as a sum of consecutive naturals, for example, 221926 + ... + 256143.

It is an arithmetic number, because the mean of its divisors is an integer number (985063235).

Almost surely, 2^8179282521 is an apocalyptic number.

It is an amenable number.

8179282521 is a deficient number, since it is larger than the sum of its proper divisors (3641476299).

8179282521 is a wasteful number, since it uses less digits than its factorization.

8179282521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479976 (or 479973 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 8179282521 is about 90439.3858946422. The cubic root of 8179282521 is about 2014.8299742216.

The spelling of 8179282521 in words is "eight billion, one hundred seventy-nine million, two hundred eighty-two thousand, five hundred twenty-one".