1166664627984 has 160 divisors (see below), whose sum is σ = 3115206864000. Its totient is φ = 375954518016.

The previous prime is 1166664627941. The next prime is 1166664627991. The reversal of 1166664627984 is 4897264666611.

It is a super-2 number, since 2×1166664627984² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333426267 + ... + 333429765.

It is an arithmetic number, because the mean of its divisors is an integer number (19470042900).

Almost surely, 2^{1166664627984} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166664627984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557603432000).

1166664627984 is an abundant number, since it is smaller than the sum of its proper divisors (1948542236016).

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

1166664627984 is a wasteful number, since it uses less digits than its factorization.

1166664627984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697 (or 4691 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 66.

The spelling of 1166664627984 in words is "one trillion, one hundred sixty-six billion, six hundred sixty-four million, six hundred twenty-seven thousand, nine hundred eighty-four".