643877047405088 has 144 divisors (see below), whose sum is σ = 1548583343979840. Its totient is φ = 257837302356480.

The previous prime is 643877047405087. The next prime is 643877047405093. The reversal of 643877047405088 is 880504740778346.

It is not an unprimeable number, because it can be changed into a prime (643877047405087) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 45328106 + ... + 57813417.

It is an arithmetic number, because the mean of its divisors is an integer number (10754050999860).

Almost surely, 2^{643877047405088} is an apocalyptic number.

It is an amenable number.

643877047405088 is an abundant number, since it is smaller than the sum of its proper divisors (904706296574752).

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

643877047405088 is a wasteful number, since it uses less digits than its factorization.

643877047405088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103141631 (or 103141592 counting only the distinct ones).

The product of its (nonzero) digits is 1011548160, while the sum is 71.

The spelling of 643877047405088 in words is "six hundred forty-three trillion, eight hundred seventy-seven billion, forty-seven million, four hundred five thousand, eighty-eight".