9974973289871 has 2 divisors, whose sum is σ = 9974973289872. Its totient is φ = 9974973289870.

The previous prime is 9974973289867. The next prime is 9974973289877. The reversal of 9974973289871 is 1789823794799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9974973289871 - 2² = 9974973289867 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9974973289871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9974973289877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4987486644935 + 4987486644936.

It is an arithmetic number, because the mean of its divisors is an integer number (4987486644936).

Almost surely, 2^{9974973289871} is an apocalyptic number.

9974973289871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9974973289871 is an equidigital number, since it uses as much as digits as its factorization.

9974973289871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456649728, while the sum is 83.

The spelling of 9974973289871 in words is "nine trillion, nine hundred seventy-four billion, nine hundred seventy-three million, two hundred eighty-nine thousand, eight hundred seventy-one".