173109779441 has 2 divisors, whose sum is σ = 173109779442. Its totient is φ = 173109779440.

The previous prime is 173109779413. The next prime is 173109779443. The reversal of 173109779441 is 144977901371.

173109779441 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., 171309898816 + 1799880625 = 413896^2 + 42425^2 .

It is a cyclic number.

It is not a de Polignac number, because 173109779441 - 2⁶ = 173109779377 is a prime.

It is a super-2 number, since 2×173109779441² (a number of 23 digits) contains 22 as substring.

Together with 173109779443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (173109779443) 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, 86554889720 + 86554889721.

It is an arithmetic number, because the mean of its divisors is an integer number (86554889721).

Almost surely, 2^173109779441 is an apocalyptic number.

It is an amenable number.

173109779441 is a deficient number, since it is larger than the sum of its proper divisors (1).

173109779441 is an equidigital number, since it uses as much as digits as its factorization.

173109779441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The spelling of 173109779441 in words is "one hundred seventy-three billion, one hundred nine million, seven hundred seventy-nine thousand, four hundred forty-one".