1166383221552 has 160 divisors (see below), whose sum is σ = 3645683328000. Its totient is φ = 355630383360.

The previous prime is 1166383221551. The next prime is 1166383221589. The reversal of 1166383221552 is 2551223836611.

It is a happy number.

1166383221552 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 383 + 2 + 215 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1166383221498 and 1166383221507.

It is not an unprimeable number, because it can be changed into a prime (1166383221551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2212024 + ... + 2688087.

It is an arithmetic number, because the mean of its divisors is an integer number (22785520800).

Almost surely, 2^{1166383221552} is an apocalyptic number.

1166383221552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1166383221552 is an abundant number, since it is smaller than the sum of its proper divisors (2479300106448).

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

1166383221552 is a wasteful number, since it uses less digits than its factorization.

1166383221552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900176 (or 4900164 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The spelling of 1166383221552 in words is "one trillion, one hundred sixty-six billion, three hundred eighty-three million, two hundred twenty-one thousand, five hundred fifty-two".