18173120948125 has 40 divisors (see below), whose sum is σ = 26679260028960. Its totient is φ = 12200137080000.

The previous prime is 18173120948111. The next prime is 18173120948173. The reversal of 18173120948125 is 52184902137181.

It is a happy number.

It is not a de Polignac number, because 18173120948125 - 2¹¹ = 18173120946077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 101578435 + ... + 101757184.

It is an arithmetic number, because the mean of its divisors is an integer number (666981500724).

Almost surely, 2^{18173120948125} is an apocalyptic number.

It is an amenable number.

18173120948125 is a deficient number, since it is larger than the sum of its proper divisors (8506139080835).

18173120948125 is a wasteful number, since it uses less digits than its factorization.

18173120948125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203335663 (or 203335648 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 18173120948125 in words is "eighteen trillion, one hundred seventy-three billion, one hundred twenty million, nine hundred forty-eight thousand, one hundred twenty-five".