638841333703 has 16 divisors (see below), whose sum is σ = 695930558400. Its totient is φ = 584581536000.

The previous prime is 638841333679. The next prime is 638841333743. The reversal of 638841333703 is 307333148836.

It is not a de Polignac number, because 638841333703 - 2⁵ = 638841333671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638841333743) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4320798 + ... + 4466203.

It is an arithmetic number, because the mean of its divisors is an integer number (43495659900).

Almost surely, 2^638841333703 is an apocalyptic number.

638841333703 is a deficient number, since it is larger than the sum of its proper divisors (57089224697).

638841333703 is a wasteful number, since it uses less digits than its factorization.

638841333703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8787162.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 638841333703 in words is "six hundred thirty-eight billion, eight hundred forty-one million, three hundred thirty-three thousand, seven hundred three".