638003608441 has 16 divisors (see below), whose sum is σ = 663379424640. Its totient is φ = 612858695680.

The previous prime is 638003608423. The next prime is 638003608457. The reversal of 638003608441 is 144806300836.

It is a cyclic number.

It is not a de Polignac number, because 638003608441 - 2¹¹ = 638003606393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638003608471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6111876 + ... + 6215386.

It is an arithmetic number, because the mean of its divisors is an integer number (41461214040).

Almost surely, 2^638003608441 is an apocalyptic number.

It is an amenable number.

638003608441 is a deficient number, since it is larger than the sum of its proper divisors (25375816199).

638003608441 is a wasteful number, since it uses less digits than its factorization.

638003608441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104624.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 638003608441 in words is "six hundred thirty-eight billion, three million, six hundred eight thousand, four hundred forty-one".