39063998644 has 72 divisors (see below), whose sum is σ = 78829632000. Its totient is φ = 16902177600.

The previous prime is 39063998621. The next prime is 39063998647. The reversal of 39063998644 is 44689936093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39063998647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976957 + ... + 1016155.

It is an arithmetic number, because the mean of its divisors is an integer number (1094856000).

Almost surely, 2^39063998644 is an apocalyptic number.

It is an amenable number.

39063998644 is an abundant number, since it is smaller than the sum of its proper divisors (39765633356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39063998644 is a wasteful number, since it uses less digits than its factorization.

39063998644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39325 (or 39312 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 61.

The spelling of 39063998644 in words is "thirty-nine billion, sixty-three million, nine hundred ninety-eight thousand, six hundred forty-four".