64568328101 has 2 divisors, whose sum is σ = 64568328102. Its totient is φ = 64568328100.

The previous prime is 64568328049. The next prime is 64568328107. The reversal of 64568328101 is 10182386546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43943059876 + 20625268225 = 209626^2 + 143615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64568328101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64568328107) 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 as a sum of consecutive naturals, namely, 32284164050 + 32284164051.

It is an arithmetic number, because the mean of its divisors is an integer number (32284164051).

Almost surely, 2^64568328101 is an apocalyptic number.

It is an amenable number.

64568328101 is a deficient number, since it is larger than the sum of its proper divisors (1).

64568328101 is an equidigital number, since it uses as much as digits as its factorization.

64568328101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 64568328101 in words is "sixty-four billion, five hundred sixty-eight million, three hundred twenty-eight thousand, one hundred one".