64745567824 has 160 divisors (see below), whose sum is σ = 155034648576. Its totient is φ = 25584007680.

The previous prime is 64745567813. The next prime is 64745567827. The reversal of 64745567824 is 42876554746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64745567827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22118649 + ... + 22121575.

Almost surely, 2^64745567824 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 64745567824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77517324288).

64745567824 is an abundant number, since it is smaller than the sum of its proper divisors (90289080752).

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

64745567824 is a wasteful number, since it uses less digits than its factorization.

64745567824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273 (or 3267 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 58.

The spelling of 64745567824 in words is "sixty-four billion, seven hundred forty-five million, five hundred sixty-seven thousand, eight hundred twenty-four".