39989682044928 has 816 divisors, whose sum is σ = 147387758259456. Its totient is φ = 10144878428160.

The previous prime is 39989682044911. The next prime is 39989682044953. The reversal of 39989682044928 is 82944028698993.

39989682044928 is a `hidden beast` number, since 3 + 9 + 9 + 8 + 96 + 82 + 0 + 449 + 2 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1952897026 + ... + 1952917502.

Almost surely, 2^{39989682044928} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39989682044928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73693879129728).

39989682044928 is an abundant number, since it is smaller than the sum of its proper divisors (107398076214528).

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

39989682044928 is a wasteful number, since it uses less digits than its factorization.

39989682044928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20576 (or 20543 counting only the distinct ones).

The product of its (nonzero) digits is 3869835264, while the sum is 81.

The spelling of 39989682044928 in words is "thirty-nine trillion, nine hundred eighty-nine billion, six hundred eighty-two million, forty-four thousand, nine hundred twenty-eight".