117771158 has 8 divisors (see below), whose sum is σ = 185954520. Its totient is φ = 55786320.

The previous prime is 117771149. The next prime is 117771163. The reversal of 117771158 is 851177711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 3099241 = 117771158 / (1 + 1 + 7 + 7 + 7 + 1 + 1 + 5 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549583 + ... + 1549658.

It is an arithmetic number, because the mean of its divisors is an integer number (23244315).

Almost surely, 2^117771158 is an apocalyptic number.

117771158 is a deficient number, since it is larger than the sum of its proper divisors (68183362).

117771158 is a wasteful number, since it uses less digits than its factorization.

117771158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099262.

The product of its digits is 13720, while the sum is 38.

The square root of 117771158 is about 10852.2420724936. The cubic root of 117771158 is about 490.1695345612.

The spelling of 117771158 in words is "one hundred seventeen million, seven hundred seventy-one thousand, one hundred fifty-eight".