117661110 has 128 divisors (see below), whose sum is σ = 349332480. Its totient is φ = 24758784.

The previous prime is 117661079. The next prime is 117661111. The reversal of 117661110 is 11166711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117661111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147232 + ... + 148028.

It is an arithmetic number, because the mean of its divisors is an integer number (2729160).

Almost surely, 2^117661110 is an apocalyptic number.

117661110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117661110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174666240).

117661110 is an abundant number, since it is smaller than the sum of its proper divisors (231671370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117661110 is a wasteful number, since it uses less digits than its factorization.

117661110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 117661110 is about 10847.1705988244. The cubic root of 117661110 is about 490.0168118624.

The spelling of 117661110 in words is "one hundred seventeen million, six hundred sixty-one thousand, one hundred ten".