161173461317425 has 12 divisors (see below), whose sum is σ = 201010323784860. Its totient is φ = 128193458246720.

The previous prime is 161173461317419. The next prime is 161173461317461. The reversal of 161173461317425 is 524713164371161.

161173461317425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 12149135484721 + 149024325832704 = 3485561^2 + 12207552^2 .

It is not a de Polignac number, because 161173461317425 - 2⁹ = 161173461316913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18632765770 + ... + 18632774419.

It is an arithmetic number, because the mean of its divisors is an integer number (16750860315405).

Almost surely, 2^{161173461317425} is an apocalyptic number.

It is an amenable number.

161173461317425 is a deficient number, since it is larger than the sum of its proper divisors (39836862467435).

161173461317425 is a wasteful number, since it uses less digits than its factorization.

161173461317425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37265540372 (or 37265540367 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The spelling of 161173461317425 in words is "one hundred sixty-one trillion, one hundred seventy-three billion, four hundred sixty-one million, three hundred seventeen thousand, four hundred twenty-five".