64970841571 has 2 divisors, whose sum is σ = 64970841572. Its totient is φ = 64970841570.

The previous prime is 64970841539. The next prime is 64970841619. The reversal of 64970841571 is 17514807946.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64970841571 - 2⁵ = 64970841539 is a prime.

It is not a weakly prime, because it can be changed into another prime (64970241571) 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, 32485420785 + 32485420786.

It is an arithmetic number, because the mean of its divisors is an integer number (32485420786).

Almost surely, 2^64970841571 is an apocalyptic number.

64970841571 is a deficient number, since it is larger than the sum of its proper divisors (1).

64970841571 is an equidigital number, since it uses as much as digits as its factorization.

64970841571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 64970841571 in words is "sixty-four billion, nine hundred seventy million, eight hundred forty-one thousand, five hundred seventy-one".