3985328972512 has 48 divisors (see below), whose sum is σ = 8344215084240. Its totient is φ = 1868325654528.

The previous prime is 3985328972497. The next prime is 3985328972519. The reversal of 3985328972512 is 2152798235893.

3985328972512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 33728743 + ... + 33846694.

It is an arithmetic number, because the mean of its divisors is an integer number (173837814255).

Almost surely, 2^{3985328972512} is an apocalyptic number.

3985328972512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3985328972512 is an abundant number, since it is smaller than the sum of its proper divisors (4358886111728).

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

3985328972512 is a wasteful number, since it uses less digits than its factorization.

3985328972512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67575563 (or 67575555 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 64.

The spelling of 3985328972512 in words is "three trillion, nine hundred eighty-five billion, three hundred twenty-eight million, nine hundred seventy-two thousand, five hundred twelve".