643001111006 has 8 divisors (see below), whose sum is σ = 969830405544. Its totient is φ = 319724309160.

The previous prime is 643001110979. The next prime is 643001111023. The reversal of 643001111006 is 600111100346.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888122720 + ... + 888123443.

It is an arithmetic number, because the mean of its divisors is an integer number (121228800693).

Almost surely, 2^643001111006 is an apocalyptic number.

643001111006 is a deficient number, since it is larger than the sum of its proper divisors (326829294538).

643001111006 is a wasteful number, since it uses less digits than its factorization.

643001111006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776246346.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 643001111006 in words is "six hundred forty-three billion, one million, one hundred eleven thousand, six".