643454263230 has 32 divisors (see below), whose sum is σ = 1548260157600. Its totient is φ = 171146700672.

The previous prime is 643454263183. The next prime is 643454263273. The reversal of 643454263230 is 32362454346.

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, 27557065 + ... + 27580404.

It is an arithmetic number, because the mean of its divisors is an integer number (48383129925).

Almost surely, 2^643454263230 is an apocalyptic number.

643454263230 is an abundant number, since it is smaller than the sum of its proper divisors (904805894370).

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

643454263230 is a wasteful number, since it uses less digits than its factorization.

643454263230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55137868.

The product of its (nonzero) digits is 1244160, while the sum is 42.

The spelling of 643454263230 in words is "six hundred forty-three billion, four hundred fifty-four million, two hundred sixty-three thousand, two hundred thirty".