3978848631472 has 40 divisors (see below), whose sum is σ = 9056749862160. Its totient is φ = 1669446977280.

The previous prime is 3978848631451. The next prime is 3978848631491. The reversal of 3978848631472 is 2741368488793.

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, 869501347 + ... + 869505922.

It is an arithmetic number, because the mean of its divisors is an integer number (226418746554).

Almost surely, 2^{3978848631472} is an apocalyptic number.

It is an amenable number.

3978848631472 is an abundant number, since it is smaller than the sum of its proper divisors (5077901230688).

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

3978848631472 is a wasteful number, since it uses less digits than its factorization.

3978848631472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739007301 (or 1739007295 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 70.

The spelling of 3978848631472 in words is "three trillion, nine hundred seventy-eight billion, eight hundred forty-eight million, six hundred thirty-one thousand, four hundred seventy-two".