3198826561728 has 112 divisors (see below), whose sum is σ = 9677022048000. Its totient is φ = 913536605184.

The previous prime is 3198826561703. The next prime is 3198826561741. The reversal of 3198826561728 is 8271656288913.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2436523 + ... + 3512021.

Almost surely, 2^{3198826561728} 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 3198826561728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4838511024000).

3198826561728 is an abundant number, since it is smaller than the sum of its proper divisors (6478195486272).

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

3198826561728 is a wasteful number, since it uses less digits than its factorization.

3198826561728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077734 (or 1077724 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 66.

The spelling of 3198826561728 in words is "three trillion, one hundred ninety-eight billion, eight hundred twenty-six million, five hundred sixty-one thousand, seven hundred twenty-eight".