643318207234230 has 96 divisors (see below), whose sum is σ = 1697092210834272. Its totient is φ = 155955180367360.

The previous prime is 643318207234201. The next prime is 643318207234267. The reversal of 643318207234230 is 32432702813346.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 643318207234230.

It is a congruent number.

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, 1322430802 + ... + 1322917178.

It is an arithmetic number, because the mean of its divisors is an integer number (17678043862857).

Almost surely, 2^{643318207234230} is an apocalyptic number.

643318207234230 is an abundant number, since it is smaller than the sum of its proper divisors (1053774003600042).

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

643318207234230 is a wasteful number, since it uses less digits than its factorization.

643318207234230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850782 (or 850771 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 48.

The spelling of 643318207234230 in words is "six hundred forty-three trillion, three hundred eighteen billion, two hundred seven million, two hundred thirty-four thousand, two hundred thirty".