240840533173 has 2 divisors, whose sum is σ = 240840533174. Its totient is φ = 240840533172.

The previous prime is 240840533117. The next prime is 240840533183. The reversal of 240840533173 is 371335048042.

240840533173 is digitally balanced in base 2, 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., 238259181924 + 2581351249 = 488118^2 + 50807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240840533173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240840533183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120420266586 + 120420266587.

It is an arithmetic number, because the mean of its divisors is an integer number (120420266587).

Almost surely, 2^240840533173 is an apocalyptic number.

It is an amenable number.

240840533173 is a deficient number, since it is larger than the sum of its proper divisors (1).

240840533173 is an equidigital number, since it uses as much as digits as its factorization.

240840533173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 240840533173 in words is "two hundred forty billion, eight hundred forty million, five hundred thirty-three thousand, one hundred seventy-three".