8064521249 has 4 divisors (see below), whose sum is σ = 8065851780. Its totient is φ = 8063190720.

The previous prime is 8064521167. The next prime is 8064521279. The reversal of 8064521249 is 9421254608.

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 3717097024 + 4347424225 = 60968^2 + 65935^2 .

It is a cyclic number.

It is not a de Polignac number, because 8064521249 - 2²⁸ = 7796085793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8064521279) 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, 656132 + ... + 668309.

It is an arithmetic number, because the mean of its divisors is an integer number (2016462945).

Almost surely, 2^8064521249 is an apocalyptic number.

It is an amenable number.

8064521249 is a deficient number, since it is larger than the sum of its proper divisors (1330531).

8064521249 is a wasteful number, since it uses less digits than its factorization.

8064521249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330530.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 8064521249 is about 89802.6795201569. The cubic root of 8064521249 is about 2005.3623803389.

The spelling of 8064521249 in words is "eight billion, sixty-four million, five hundred twenty-one thousand, two hundred forty-nine".