8513071666 has 16 divisors (see below), whose sum is σ = 14306981760. Its totient is φ = 3764994480.

The previous prime is 8513071663. The next prime is 8513071669. The reversal of 8513071666 is 6661703158.

It is an interprime number because it is at equal distance from previous prime (8513071663) and next prime (8513071669).

It is not an unprimeable number, because it can be changed into a prime (8513071661) 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 7 ways as a sum of consecutive naturals, for example, 5228346 + ... + 5229973.

It is an arithmetic number, because the mean of its divisors is an integer number (894186360).

Almost surely, 2^8513071666 is an apocalyptic number.

8513071666 is a deficient number, since it is larger than the sum of its proper divisors (5793910094).

8513071666 is a wasteful number, since it uses less digits than its factorization.

8513071666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10458369.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 8513071666 is about 92266.3084012794. The cubic root of 8513071666 is about 2041.8731726355.

The spelling of 8513071666 in words is "eight billion, five hundred thirteen million, seventy-one thousand, six hundred sixty-six".