640328416006 has 4 divisors (see below), whose sum is σ = 960492624012. Its totient is φ = 320164208002.

The previous prime is 640328415989. The next prime is 640328416027. The reversal of 640328416006 is 600614823046.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 640328416006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160082104000 + ... + 160082104003.

It is an arithmetic number, because the mean of its divisors is an integer number (240123156003).

Almost surely, 2^640328416006 is an apocalyptic number.

640328416006 is a deficient number, since it is larger than the sum of its proper divisors (320164208006).

640328416006 is a wasteful number, since it uses less digits than its factorization.

640328416006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320164208005.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 640328416006 in words is "six hundred forty billion, three hundred twenty-eight million, four hundred sixteen thousand, six".