645070210032 has 80 divisors (see below), whose sum is σ = 1689751134720. Its totient is φ = 212027582976.

The previous prime is 645070210027. The next prime is 645070210151. The reversal of 645070210032 is 230012070546.

It is a super-2 number, since 2×645070210032² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362103 + ... + 1773545.

It is an arithmetic number, because the mean of its divisors is an integer number (21121889184).

Almost surely, 2^645070210032 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 645070210032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844875567360).

645070210032 is an abundant number, since it is smaller than the sum of its proper divisors (1044680924688).

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

645070210032 is a wasteful number, since it uses less digits than its factorization.

645070210032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411910 (or 411904 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

Adding to 645070210032 its reverse (230012070546), we get a palindrome (875082280578).

The spelling of 645070210032 in words is "six hundred forty-five billion, seventy million, two hundred ten thousand, thirty-two".