117111655 has 4 divisors (see below), whose sum is σ = 140533992. Its totient is φ = 93689320.

The previous prime is 117111647. The next prime is 117111679. The reversal of 117111655 is 556111711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556111711 = 1451 ⋅383261.

It is not a de Polignac number, because 117111655 - 2³ = 117111647 is a prime.

It is a Duffinian 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, 11711161 + ... + 11711170.

It is an arithmetic number, because the mean of its divisors is an integer number (35133498).

Almost surely, 2^117111655 is an apocalyptic number.

117111655 is a deficient number, since it is larger than the sum of its proper divisors (23422337).

117111655 is an equidigital number, since it uses as much as digits as its factorization.

117111655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23422336.

The product of its digits is 1050, while the sum is 28.

The square root of 117111655 is about 10821.8138498128. The cubic root of 117111655 is about 489.2528596913.

It can be divided in two parts, 11711 and 1655, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 117111655 in words is "one hundred seventeen million, one hundred eleven thousand, six hundred fifty-five".