118665976887666 has 144 divisors (see below), whose sum is σ = 282658385337120. Its totient is φ = 35955628600320.

The previous prime is 118665976887643. The next prime is 118665976887701. The reversal of 118665976887666 is 666788679566811.

It is a super-2 number, since 2×118665976887666² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 619702645 + ... + 619894103.

It is an arithmetic number, because the mean of its divisors is an integer number (1962905453730).

Almost surely, 2^{118665976887666} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118665976887666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141329192668560).

118665976887666 is an abundant number, since it is smaller than the sum of its proper divisors (163992408449454).

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

118665976887666 is a wasteful number, since it uses less digits than its factorization.

118665976887666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194601 (or 194585 counting only the distinct ones).

The product of its digits is 52672757760, while the sum is 90.

The spelling of 118665976887666 in words is "one hundred eighteen trillion, six hundred sixty-five billion, nine hundred seventy-six million, eight hundred eighty-seven thousand, six hundred sixty-six".