9172385576873 has 2 divisors, whose sum is σ = 9172385576874. Its totient is φ = 9172385576872.

The previous prime is 9172385576839. The next prime is 9172385576891. The reversal of 9172385576873 is 3786755832719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6155400696064 + 3016984880809 = 2481008^2 + 1736947^2 .

It is a cyclic number.

It is not a de Polignac number, because 9172385576873 - 2²⁰ = 9172384528297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9172385576797 and 9172385576806.

It is not a weakly prime, because it can be changed into another prime (9172385576803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586192788436 + 4586192788437.

It is an arithmetic number, because the mean of its divisors is an integer number (4586192788437).

Almost surely, 2^{9172385576873} is an apocalyptic number.

It is an amenable number.

9172385576873 is a deficient number, since it is larger than the sum of its proper divisors (1).

9172385576873 is an equidigital number, since it uses as much as digits as its factorization.

9172385576873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 533433600, while the sum is 71.

The spelling of 9172385576873 in words is "nine trillion, one hundred seventy-two billion, three hundred eighty-five million, five hundred seventy-six thousand, eight hundred seventy-three".