64530063673 has 2 divisors, whose sum is σ = 64530063674. Its totient is φ = 64530063672.

The previous prime is 64530063571. The next prime is 64530063721. The reversal of 64530063673 is 37636003546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64339844409 + 190219264 = 253653^2 + 13792^2 .

It is a cyclic number.

It is not a de Polignac number, because 64530063673 - 2⁹ = 64530063161 is a prime.

It is not a weakly prime, because it can be changed into another prime (64530063373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32265031836 + 32265031837.

It is an arithmetic number, because the mean of its divisors is an integer number (32265031837).

Almost surely, 2^64530063673 is an apocalyptic number.

It is an amenable number.

64530063673 is a deficient number, since it is larger than the sum of its proper divisors (1).

64530063673 is an equidigital number, since it uses as much as digits as its factorization.

64530063673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 43.

The spelling of 64530063673 in words is "sixty-four billion, five hundred thirty million, sixty-three thousand, six hundred seventy-three".