64573535248640 has 288 divisors, whose sum is σ = 178695254352384. Its totient is φ = 22095752069120.

The previous prime is 64573535248609. The next prime is 64573535248667. The reversal of 64573535248640 is 4684253537546.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 1389940292 + ... + 1389986748.

It is an arithmetic number, because the mean of its divisors is an integer number (620469633168).

Almost surely, 2^{64573535248640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64573535248640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89347627176192).

64573535248640 is an abundant number, since it is smaller than the sum of its proper divisors (114121719103744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64573535248640 is a wasteful number, since it uses less digits than its factorization.

64573535248640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52313 (or 52299 counting only the distinct ones).

The product of its (nonzero) digits is 290304000, while the sum is 62.

The spelling of 64573535248640 in words is "sixty-four trillion, five hundred seventy-three billion, five hundred thirty-five million, two hundred forty-eight thousand, six hundred forty".