9973188061 has 2 divisors, whose sum is σ = 9973188062. Its totient is φ = 9973188060.

The previous prime is 9973188031. The next prime is 9973188083. The reversal of 9973188061 is 1608813799.

It is a happy number.

9973188061 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9882348100 + 90839961 = 99410^2 + 9531^2 .

It is an emirp because it is prime and its reverse (1608813799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9973188061 - 2¹³ = 9973179869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9973188031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986594030 + 4986594031.

It is an arithmetic number, because the mean of its divisors is an integer number (4986594031).

Almost surely, 2^9973188061 is an apocalyptic number.

It is an amenable number.

9973188061 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973188061 is an equidigital number, since it uses as much as digits as its factorization.

9973188061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 9973188061 is about 99865.8503243226. The cubic root of 9973188061 is about 2152.5074808808.

The spelling of 9973188061 in words is "nine billion, nine hundred seventy-three million, one hundred eighty-eight thousand, sixty-one".