8644521514 has 8 divisors (see below), whose sum is σ = 12995157348. Its totient is φ = 4312802400.

The previous prime is 8644521497. The next prime is 8644521541. The reversal of 8644521514 is 4151254468.

It can be written as a sum of positive squares in 2 ways, for example, as 8571982225 + 72539289 = 92585^2 + 8517^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728037 + ... + 4729864.

Almost surely, 2^8644521514 is an apocalyptic number.

8644521514 is a deficient number, since it is larger than the sum of its proper divisors (4350635834).

8644521514 is a wasteful number, since it uses less digits than its factorization.

8644521514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9458360.

The product of its digits is 153600, while the sum is 40.

The square root of 8644521514 is about 92975.9190005670. The cubic root of 8644521514 is about 2052.3290217459.

The spelling of 8644521514 in words is "eight billion, six hundred forty-four million, five hundred twenty-one thousand, five hundred fourteen".