39821138304 has 64 divisors (see below), whose sum is σ = 105795901440. Its totient is φ = 13271077376.

The previous prime is 39821138219. The next prime is 39821138311. The reversal of 39821138304 is 40383112893.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3366769 + ... + 3378575.

It is an arithmetic number, because the mean of its divisors is an integer number (1653060960).

Almost surely, 2^39821138304 is an apocalyptic number.

It is an amenable number.

39821138304 is an abundant number, since it is smaller than the sum of its proper divisors (65974763136).

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

39821138304 is a wasteful number, since it uses less digits than its factorization.

39821138304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20607 (or 20595 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 39821138304 in words is "thirty-nine billion, eight hundred twenty-one million, one hundred thirty-eight thousand, three hundred four".