640753710080 has 704 divisors, whose sum is σ = 1862980922880. Its totient is φ = 208915660800.

The previous prime is 640753710071. The next prime is 640753710133. The reversal of 640753710080 is 80017357046.

It is a tau number, because it is divible by the number of its divisors (704).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1389921050 + ... + 1389921510.

It is an arithmetic number, because the mean of its divisors is an integer number (2646279720).

Almost surely, 2^640753710080 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 640753710080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931490461440).

640753710080 is an abundant number, since it is smaller than the sum of its proper divisors (1222227212800).

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

640753710080 is a wasteful number, since it uses less digits than its factorization.

640753710080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 640753710080 in words is "six hundred forty billion, seven hundred fifty-three million, seven hundred ten thousand, eighty".