643243010016 has 96 divisors (see below), whose sum is σ = 1854659600640. Its totient is φ = 194297647104.

The previous prime is 643243010009. The next prime is 643243010099. The reversal of 643243010016 is 610010342346.

It is a tau number, because it is divible by the number of its divisors (96).

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, 7624465 + ... + 7708368.

It is an arithmetic number, because the mean of its divisors is an integer number (19319370840).

Almost surely, 2^643243010016 is an apocalyptic number.

It is an amenable number.

643243010016 is an abundant number, since it is smaller than the sum of its proper divisors (1211416590624).

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

643243010016 is a wasteful number, since it uses less digits than its factorization.

643243010016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15332888 (or 15332880 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

It can be divided in two parts, 6432430 and 10016, that added together give a palindrome (6442446).

The spelling of 643243010016 in words is "six hundred forty-three billion, two hundred forty-three million, ten thousand, sixteen".