64509006571 has 2 divisors, whose sum is σ = 64509006572. Its totient is φ = 64509006570.

The previous prime is 64509006521. The next prime is 64509006589. The reversal of 64509006571 is 17560090546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64509006571 - 2⁹ = 64509006059 is a prime.

It is a super-2 number, since 2×64509006571² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64509006521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32254503285 + 32254503286.

It is an arithmetic number, because the mean of its divisors is an integer number (32254503286).

Almost surely, 2^64509006571 is an apocalyptic number.

64509006571 is a deficient number, since it is larger than the sum of its proper divisors (1).

64509006571 is an equidigital number, since it uses as much as digits as its factorization.

64509006571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 64509006571 in words is "sixty-four billion, five hundred nine million, six thousand, five hundred seventy-one".