7971331797 has 64 divisors (see below), whose sum is σ = 13899755520. Its totient is φ = 4451198400.

The previous prime is 7971331793. The next prime is 7971331799.

7971331797 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7971331797 - 2² = 7971331793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971331793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2496472 + ... + 2499662.

It is an arithmetic number, because the mean of its divisors is an integer number (217183680).

Almost surely, 2^7971331797 is an apocalyptic number.

It is an amenable number.

7971331797 is a deficient number, since it is larger than the sum of its proper divisors (5928423723).

7971331797 is a wasteful number, since it uses less digits than its factorization.

7971331797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871 (or 3865 counting only the distinct ones).

The product of its digits is 1750329, while the sum is 54.

The square root of 7971331797 is about 89282.3151413537. The cubic root of 7971331797 is about 1997.6081236875.

The spelling of 7971331797 in words is "seven billion, nine hundred seventy-one million, three hundred thirty-one thousand, seven hundred ninety-seven".