9971816476 has 48 divisors (see below), whose sum is σ = 18329794560. Its totient is φ = 4741738880.

The previous prime is 9971816473. The next prime is 9971816483. The reversal of 9971816476 is 6746181799.

It is a self number, because there is not a number n which added to its sum of digits gives 9971816476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971816473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2024745 + ... + 2029663.

It is an arithmetic number, because the mean of its divisors is an integer number (381870720).

Almost surely, 2^9971816476 is an apocalyptic number.

It is an amenable number.

9971816476 is a deficient number, since it is larger than the sum of its proper divisors (8357978084).

9971816476 is a wasteful number, since it uses less digits than its factorization.

9971816476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274 (or 5272 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 58.

The square root of 9971816476 is about 99858.9829509594. The cubic root of 9971816476 is about 2152.4088002213.

The spelling of 9971816476 in words is "nine billion, nine hundred seventy-one million, eight hundred sixteen thousand, four hundred seventy-six".