64324546081 has 2 divisors, whose sum is σ = 64324546082. Its totient is φ = 64324546080.

The previous prime is 64324546051. The next prime is 64324546157. The reversal of 64324546081 is 18064542346.

64324546081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35736499681 + 28588046400 = 189041^2 + 169080^2 .

It is a cyclic number.

It is not a de Polignac number, because 64324546081 - 2⁹ = 64324545569 is a prime.

It is a super-2 number, since 2×64324546081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64324546031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32162273040 + 32162273041.

It is an arithmetic number, because the mean of its divisors is an integer number (32162273041).

Almost surely, 2^64324546081 is an apocalyptic number.

It is an amenable number.

64324546081 is a deficient number, since it is larger than the sum of its proper divisors (1).

64324546081 is an equidigital number, since it uses as much as digits as its factorization.

64324546081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 64324546081 in words is "sixty-four billion, three hundred twenty-four million, five hundred forty-six thousand, eighty-one".