117920866608 has 120 divisors (see below), whose sum is σ = 342484069200. Its totient is φ = 39278628864.

The previous prime is 117920866487. The next prime is 117920866643. The reversal of 117920866608 is 806668029711.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5779048 + ... + 5799416.

It is an arithmetic number, because the mean of its divisors is an integer number (2854033910).

Almost surely, 2^117920866608 is an apocalyptic number.

117920866608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117920866608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171242034600).

117920866608 is an abundant number, since it is smaller than the sum of its proper divisors (224563202592).

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

117920866608 is a wasteful number, since it uses less digits than its factorization.

117920866608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21881 (or 21863 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 117920866608 in words is "one hundred seventeen billion, nine hundred twenty million, eight hundred sixty-six thousand, six hundred eight".