64645601333 has 2 divisors, whose sum is σ = 64645601334. Its totient is φ = 64645601332.

The previous prime is 64645601323. The next prime is 64645601353. The reversal of 64645601333 is 33310654646.

It is a happy number.

64645601333 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., 36176800804 + 28468800529 = 190202^2 + 168727^2 .

It is a cyclic number.

It is not a de Polignac number, because 64645601333 - 2²⁸ = 64377165877 is a prime.

It is a super-3 number, since 3×64645601333³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64645601323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32322800666 + 32322800667.

It is an arithmetic number, because the mean of its divisors is an integer number (32322800667).

Almost surely, 2^64645601333 is an apocalyptic number.

It is an amenable number.

64645601333 is a deficient number, since it is larger than the sum of its proper divisors (1).

64645601333 is an equidigital number, since it uses as much as digits as its factorization.

64645601333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 64645601333 in words is "sixty-four billion, six hundred forty-five million, six hundred one thousand, three hundred thirty-three".