8513071663 has 2 divisors, whose sum is σ = 8513071664. Its totient is φ = 8513071662.

The previous prime is 8513071661. The next prime is 8513071669. The reversal of 8513071663 is 3661703158.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8513071663 - 2¹ = 8513071661 is a prime.

Together with 8513071661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8513071661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256535831 + 4256535832.

It is an arithmetic number, because the mean of its divisors is an integer number (4256535832).

Almost surely, 2^8513071663 is an apocalyptic number.

8513071663 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513071663 is an equidigital number, since it uses as much as digits as its factorization.

8513071663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 8513071663 is about 92266.3083850221. The cubic root of 8513071663 is about 2041.8731723957.

The spelling of 8513071663 in words is "eight billion, five hundred thirteen million, seventy-one thousand, six hundred sixty-three".