116665318656 has 216 divisors, whose sum is σ = 360091839744. Its totient is φ = 37633351680.

The previous prime is 116665318639. The next prime is 116665318663. The reversal of 116665318656 is 656813566611.

It is a tau number, because it is divible by the number of its divisors (216).

It is a super-2 number, since 2×116665318656² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

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, 1898200 + ... + 1958696.

Almost surely, 2^116665318656 is an apocalyptic number.

116665318656 is a gapful number since it is divisible by the number (16) 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 116665318656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180045919872).

116665318656 is an abundant number, since it is smaller than the sum of its proper divisors (243426521088).

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

116665318656 is an frugal number, since it uses more digits than its factorization.

116665318656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60559 (or 60533 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 116665318656 in words is "one hundred sixteen billion, six hundred sixty-five million, three hundred eighteen thousand, six hundred fifty-six".