117216520173 has 56 divisors (see below), whose sum is σ = 178304045472. Its totient is φ = 77010961248.

The previous prime is 117216520153. The next prime is 117216520177. The reversal of 117216520173 is 371025612711.

117216520173 is a `hidden beast` number, since 117 + 2 + 1 + 6 + 520 + 17 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-117216520173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117216520177) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 26802415 + ... + 26806787.

It is an arithmetic number, because the mean of its divisors is an integer number (3184000812).

Almost surely, 2^117216520173 is an apocalyptic number.

It is an amenable number.

117216520173 is a deficient number, since it is larger than the sum of its proper divisors (61087525299).

117216520173 is an frugal number, since it uses more digits than its factorization.

117216520173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917 (or 4902 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 117216520173 in words is "one hundred seventeen billion, two hundred sixteen million, five hundred twenty thousand, one hundred seventy-three".