117173185166 has 4 divisors (see below), whose sum is σ = 175759777752. Its totient is φ = 58586592582.

The previous prime is 117173185163. The next prime is 117173185289. The reversal of 117173185166 is 661581371711.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 117173185166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117173185163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29293296290 + ... + 29293296293.

It is an arithmetic number, because the mean of its divisors is an integer number (43939944438).

Almost surely, 2^117173185166 is an apocalyptic number.

117173185166 is a deficient number, since it is larger than the sum of its proper divisors (58586592586).

117173185166 is an equidigital number, since it uses as much as digits as its factorization.

117173185166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58586592585.

The product of its digits is 211680, while the sum is 47.

The spelling of 117173185166 in words is "one hundred seventeen billion, one hundred seventy-three million, one hundred eighty-five thousand, one hundred sixty-six".