643500106300 has 36 divisors (see below), whose sum is σ = 1409206219960. Its totient is φ = 255038569920.

The previous prime is 643500106261. The next prime is 643500106349. The reversal of 643500106300 is 3601005346.

It is a super-2 number, since 2×643500106300² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29507454 + ... + 29529253.

Almost surely, 2^643500106300 is an apocalyptic number.

It is an amenable number.

643500106300 is an abundant number, since it is smaller than the sum of its proper divisors (765706113660).

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

643500106300 is a wasteful number, since it uses less digits than its factorization.

643500106300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59036830 (or 59036823 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 643500106300 in words is "six hundred forty-three billion, five hundred million, one hundred six thousand, three hundred".