9972089606573 has 4 divisors (see below), whose sum is σ = 10558683112860. Its totient is φ = 9385496100288.

The previous prime is 9972089606551. The next prime is 9972089606603. The reversal of 9972089606573 is 3756069802799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3341737553764 + 6630352052809 = 1828042^2 + 2574947^2 .

It is a cyclic number.

It is not a de Polignac number, because 9972089606573 - 2⁶ = 9972089606509 is a prime.

It is a super-2 number, since 2×9972089606573² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9972089606497 and 9972089606506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9972089606533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293296753118 + ... + 293296753151.

It is an arithmetic number, because the mean of its divisors is an integer number (2639670778215).

Almost surely, 2^{9972089606573} is an apocalyptic number.

It is an amenable number.

9972089606573 is a deficient number, since it is larger than the sum of its proper divisors (586593506287).

9972089606573 is a wasteful number, since it uses less digits than its factorization.

9972089606573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586593506286.

The product of its (nonzero) digits is 308629440, while the sum is 71.

The spelling of 9972089606573 in words is "nine trillion, nine hundred seventy-two billion, eighty-nine million, six hundred six thousand, five hundred seventy-three".