9973424375521 has 16 divisors (see below), whose sum is σ = 10084090391424. Its totient is φ = 9863094248064.

The previous prime is 9973424375461. The next prime is 9973424375539. The reversal of 9973424375521 is 1255734243799.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9973424375521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9973424375521.

It is not an unprimeable number, because it can be changed into a prime (9973424375021) 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, 175829461 + ... + 175886173.

It is an arithmetic number, because the mean of its divisors is an integer number (630255649464).

Almost surely, 2^{9973424375521} is an apocalyptic number.

It is an amenable number.

9973424375521 is a deficient number, since it is larger than the sum of its proper divisors (110666015903).

9973424375521 is a wasteful number, since it uses less digits than its factorization.

9973424375521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59640.

The product of its digits is 57153600, while the sum is 61.

The spelling of 9973424375521 in words is "nine trillion, nine hundred seventy-three billion, four hundred twenty-four million, three hundred seventy-five thousand, five hundred twenty-one".