3973898376320 has 128 divisors (see below), whose sum is σ = 9561708072000. Its totient is φ = 1579258073088.

The previous prime is 3973898376319. The next prime is 3973898376341. The reversal of 3973898376320 is 236738983793.

It is a happy number.

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

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, 440121566 + ... + 440130594.

Almost surely, 2^{3973898376320} 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 3973898376320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4780854036000).

3973898376320 is an abundant number, since it is smaller than the sum of its proper divisors (5587809695680).

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

3973898376320 is a wasteful number, since it uses less digits than its factorization.

3973898376320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13430 (or 13418 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 68.

The spelling of 3973898376320 in words is "three trillion, nine hundred seventy-three billion, eight hundred ninety-eight million, three hundred seventy-six thousand, three hundred twenty".