117665856000 has 1440 divisors, whose sum is σ = 539241468480. Its totient is φ = 24385536000.

The previous prime is 117665855947. The next prime is 117665856017. The reversal of 117665856000 is 658566711.

117665856000 is a `hidden beast` number, since 1 + 1 + 7 + 6 + 6 + 585 + 60 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 310463811 + ... + 310464189.

It is an arithmetic number, because the mean of its divisors is an integer number (374473242).

Almost surely, 2^117665856000 is an apocalyptic number.

117665856000 is a gapful number since it is divisible by the number (10) 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 117665856000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269620734240).

117665856000 is an abundant number, since it is smaller than the sum of its proper divisors (421575612480).

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

117665856000 is a wasteful number, since it uses less digits than its factorization.

117665856000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 117665856000 in words is "one hundred seventeen billion, six hundred sixty-five million, eight hundred fifty-six thousand".