3978848631471 has 24 divisors (see below), whose sum is σ = 6171351871104. Its totient is φ = 2273599626480.

The previous prime is 3978848631451. The next prime is 3978848631491. The reversal of 3978848631471 is 1741368488793.

It is an interprime number because it is at equal distance from previous prime (3978848631451) and next prime (3978848631491).

It is not a de Polignac number, because 3978848631471 - 2¹³ = 3978848623279 is a prime.

It is a super-3 number, since 3×3978848631471³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3978848631396 and 3978848631405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978848631431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19813156 + ... + 20012966.

It is an arithmetic number, because the mean of its divisors is an integer number (257139661296).

Almost surely, 2^{3978848631471} is an apocalyptic number.

3978848631471 is a deficient number, since it is larger than the sum of its proper divisors (2192503239633).

3978848631471 is a wasteful number, since it uses less digits than its factorization.

3978848631471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335291 (or 335284 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 69.

The spelling of 3978848631471 in words is "three trillion, nine hundred seventy-eight billion, eight hundred forty-eight million, six hundred thirty-one thousand, four hundred seventy-one".