3998489968000 has 128 divisors (see below), whose sum is σ = 10844995767840. Its totient is φ = 1453996288000.

The previous prime is 3998489967991. The next prime is 3998489968069. The reversal of 3998489968000 is 8699848993.

3998489968000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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, 11183347 + ... + 11535346.

Almost surely, 2^{3998489968000} is an apocalyptic number.

It is an amenable number.

3998489968000 is an abundant number, since it is smaller than the sum of its proper divisors (6846505799840).

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

3998489968000 is a wasteful number, since it uses less digits than its factorization.

3998489968000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22718733 (or 22718711 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 73.

The spelling of 3998489968000 in words is "three trillion, nine hundred ninety-eight billion, four hundred eighty-nine million, nine hundred sixty-eight thousand".