64943318710512 has 480 divisors, whose sum is σ = 203094841098240. Its totient is φ = 19207149857280.

The previous prime is 64943318710453. The next prime is 64943318710519. The reversal of 64943318710512 is 21501781334946.

64943318710512 is a `hidden beast` number, since 6 + 4 + 9 + 4 + 3 + 31 + 87 + 10 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64943318710519) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11308253913 + ... + 11308259655.

It is an arithmetic number, because the mean of its divisors is an integer number (423114252288).

It is a 1-persistent number, because it is pandigital, but 2⋅64943318710512 = 129886637421024 is not.

Almost surely, 2^{64943318710512} 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 64943318710512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101547420549120).

64943318710512 is an abundant number, since it is smaller than the sum of its proper divisors (138151522387728).

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

64943318710512 is a wasteful number, since it uses less digits than its factorization.

64943318710512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6801 (or 6792 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 64943318710512 in words is "sixty-four trillion, nine hundred forty-three billion, three hundred eighteen million, seven hundred ten thousand, five hundred twelve".