163108185745 has 16 divisors (see below), whose sum is σ = 206087120640. Its totient is φ = 123585398784.

The previous prime is 163108185733. The next prime is 163108185791. The reversal of 163108185745 is 547581801361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 163108185745 - 2²³ = 163099797137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123729 + ... + 584401.

It is an arithmetic number, because the mean of its divisors is an integer number (12880445040).

Almost surely, 2^163108185745 is an apocalyptic number.

It is an amenable number.

163108185745 is a deficient number, since it is larger than the sum of its proper divisors (42978934895).

163108185745 is a wasteful number, since it uses less digits than its factorization.

163108185745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464424.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 163108185745 in words is "one hundred sixty-three billion, one hundred eight million, one hundred eighty-five thousand, seven hundred forty-five".