173396338781 has 2 divisors, whose sum is σ = 173396338782. Its totient is φ = 173396338780.

The previous prime is 173396338763. The next prime is 173396338783. The reversal of 173396338781 is 187833693371.

173396338781 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., 163026175225 + 10370163556 = 403765^2 + 101834^2 .

It is an emirp because it is prime and its reverse (187833693371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173396338781 - 2¹⁰ = 173396337757 is a prime.

It is a super-2 number, since 2×173396338781² (a number of 23 digits) contains 22 as substring.

Together with 173396338783, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 173396338781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173396338783) 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, 86698169390 + 86698169391.

It is an arithmetic number, because the mean of its divisors is an integer number (86698169391).

Almost surely, 2^173396338781 is an apocalyptic number.

It is an amenable number.

173396338781 is a deficient number, since it is larger than the sum of its proper divisors (1).

173396338781 is an equidigital number, since it uses as much as digits as its factorization.

173396338781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 59.

The spelling of 173396338781 in words is "one hundred seventy-three billion, three hundred ninety-six million, three hundred thirty-eight thousand, seven hundred eighty-one".