8134521005 has 48 divisors (see below), whose sum is σ = 10834575024. Its totient is φ = 5828060160.

The previous prime is 8134520971. The next prime is 8134521013. The reversal of 8134521005 is 5001254318.

It can be written as a sum of positive squares in 8 ways, for example, as 5451902569 + 2682618436 = 73837^2 + 51794^2 .

It is not a de Polignac number, because 8134521005 - 2¹² = 8134516909 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 25988729 + ... + 25989041.

It is an arithmetic number, because the mean of its divisors is an integer number (225720313).

Almost surely, 2^8134521005 is an apocalyptic number.

It is an amenable number.

8134521005 is a deficient number, since it is larger than the sum of its proper divisors (2700054019).

8134521005 is a wasteful number, since it uses less digits than its factorization.

8134521005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 8134521005 is about 90191.5794572864. The cubic root of 8134521005 is about 2011.1478312305.

The spelling of 8134521005 in words is "eight billion, one hundred thirty-four million, five hundred twenty-one thousand, five".