638712084325 has 24 divisors (see below), whose sum is σ = 905919527360. Its totient is φ = 437599843200.

The previous prime is 638712084317. The next prime is 638712084341. The reversal of 638712084325 is 523480217836.

It is not a de Polignac number, because 638712084325 - 2³ = 638712084317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1353480 + ... + 1763329.

Almost surely, 2^638712084325 is an apocalyptic number.

It is an amenable number.

638712084325 is a deficient number, since it is larger than the sum of its proper divisors (267207443035).

638712084325 is a wasteful number, since it uses less digits than its factorization.

638712084325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117997 (or 3117992 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 638712084325 in words is "six hundred thirty-eight billion, seven hundred twelve million, eighty-four thousand, three hundred twenty-five".