3971239780704 has 48 divisors (see below), whose sum is σ = 11913719344128. Its totient is φ = 1134639937152.

The previous prime is 3971239780691. The next prime is 3971239780723. The reversal of 3971239780704 is 4070879321793.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954790832 + ... + 2954792175.

It is an arithmetic number, because the mean of its divisors is an integer number (248202486336).

Almost surely, 2^{3971239780704} is an apocalyptic number.

It is an amenable number.

3971239780704 is an abundant number, since it is smaller than the sum of its proper divisors (7942479563424).

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

3971239780704 is a wasteful number, since it uses less digits than its factorization.

3971239780704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5909583027 (or 5909583019 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 60.

The spelling of 3971239780704 in words is "three trillion, nine hundred seventy-one billion, two hundred thirty-nine million, seven hundred eighty thousand, seven hundred four".