641873642973 has 8 divisors (see below), whose sum is σ = 855841879200. Its totient is φ = 427910584368.

The previous prime is 641873642959. The next prime is 641873642981. The reversal of 641873642973 is 379246378146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641873642973 - 2²⁰ = 641872594397 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641873642573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995263 + ... + 1508076.

It is an arithmetic number, because the mean of its divisors is an integer number (106980234900).

Almost surely, 2^641873642973 is an apocalyptic number.

It is an amenable number.

641873642973 is a deficient number, since it is larger than the sum of its proper divisors (213968236227).

641873642973 is a wasteful number, since it uses less digits than its factorization.

641873642973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588811.

The product of its digits is 36578304, while the sum is 60.

The spelling of 641873642973 in words is "six hundred forty-one billion, eight hundred seventy-three million, six hundred forty-two thousand, nine hundred seventy-three".