117581611 has 8 divisors (see below), whose sum is σ = 136220384. Its totient is φ = 99403200.

The previous prime is 117581603. The next prime is 117581627. The reversal of 117581611 is 116185711.

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

It is a cyclic number.

It is not a de Polignac number, because 117581611 - 2³ = 117581603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117581011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114540 + ... + 115561.

It is an arithmetic number, because the mean of its divisors is an integer number (17027548).

Almost surely, 2^117581611 is an apocalyptic number.

117581611 is a deficient number, since it is larger than the sum of its proper divisors (18638773).

117581611 is an equidigital number, since it uses as much as digits as its factorization.

117581611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230181.

The product of its digits is 1680, while the sum is 31.

The square root of 117581611 is about 10843.5054756292. The cubic root of 117581611 is about 489.9064252800.

The spelling of 117581611 in words is "one hundred seventeen million, five hundred eighty-one thousand, six hundred eleven".