7971373648 has 40 divisors (see below), whose sum is σ = 17769398400. Its totient is φ = 3393367680.

The previous prime is 7971373643. The next prime is 7971373651. The reversal of 7971373648 is 8463731797.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971373643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222148 + ... + 255523.

It is an arithmetic number, because the mean of its divisors is an integer number (444234960).

Almost surely, 2^7971373648 is an apocalyptic number.

It is an amenable number.

7971373648 is an abundant number, since it is smaller than the sum of its proper divisors (9798024752).

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

7971373648 is a wasteful number, since it uses less digits than its factorization.

7971373648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477835 (or 477829 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 55.

The square root of 7971373648 is about 89282.5495155688. The cubic root of 7971373648 is about 1997.6116196216.

The spelling of 7971373648 in words is "seven billion, nine hundred seventy-one million, three hundred seventy-three thousand, six hundred forty-eight".