643125584570 has 96 divisors (see below), whose sum is σ = 1369347534720. Its totient is φ = 216783181440.

The previous prime is 643125584557. The next prime is 643125584593. The reversal of 643125584570 is 75485521346.

It is a super-2 number, since 2×643125584570² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90234347 + ... + 90241473.

It is an arithmetic number, because the mean of its divisors is an integer number (14264036820).

Almost surely, 2^643125584570 is an apocalyptic number.

643125584570 is an abundant number, since it is smaller than the sum of its proper divisors (726221950150).

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

643125584570 is a wasteful number, since it uses less digits than its factorization.

643125584570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228 (or 10221 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 643125584570 in words is "six hundred forty-three billion, one hundred twenty-five million, five hundred eighty-four thousand, five hundred seventy".