3985328972513 has 12 divisors (see below), whose sum is σ = 4636627727472. Its totient is φ = 3415529988360.

The previous prime is 3985328972497. The next prime is 3985328972519. The reversal of 3985328972513 is 3152798235893.

It is not a de Polignac number, because 3985328972513 - 2⁴ = 3985328972497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3985328972513.

It is not an unprimeable number, because it can be changed into a prime (3985328972519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5187995 + ... + 5906432.

It is an arithmetic number, because the mean of its divisors is an integer number (386385643956).

Almost surely, 2^{3985328972513} is an apocalyptic number.

It is an amenable number.

3985328972513 is a deficient number, since it is larger than the sum of its proper divisors (651298754959).

3985328972513 is a wasteful number, since it uses less digits than its factorization.

3985328972513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101772 (or 11101765 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 65.

The spelling of 3985328972513 in words is "three trillion, nine hundred eighty-five billion, three hundred twenty-eight million, nine hundred seventy-two thousand, five hundred thirteen".