3970321121872 has 40 divisors (see below), whose sum is σ = 8804148270272. Its totient is φ = 1699103692800.

The previous prime is 3970321121861. The next prime is 3970321121929. The reversal of 3970321121872 is 2781211230793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25573329 + ... + 25728112.

Almost surely, 2^{3970321121872} is an apocalyptic number.

It is an amenable number.

3970321121872 is an abundant number, since it is smaller than the sum of its proper divisors (4833827148400).

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

3970321121872 is a wasteful number, since it uses less digits than its factorization.

3970321121872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51302147 (or 51302141 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 3970321121872 in words is "three trillion, nine hundred seventy billion, three hundred twenty-one million, one hundred twenty-one thousand, eight hundred seventy-two".