39728346816 has 56 divisors (see below), whose sum is σ = 105233541120. Its totient is φ = 13227795712.

The previous prime is 39728346787. The next prime is 39728346841. The reversal of 39728346816 is 61864382793.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53665 + ... + 286943.

Almost surely, 2^39728346816 is an apocalyptic number.

It is an amenable number.

39728346816 is an abundant number, since it is smaller than the sum of its proper divisors (65505194304).

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

39728346816 is a wasteful number, since it uses less digits than its factorization.

39728346816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234181 (or 234171 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 39728346816 in words is "thirty-nine billion, seven hundred twenty-eight million, three hundred forty-six thousand, eight hundred sixteen".