1166445148769 has 4 divisors (see below), whose sum is σ = 1177994110740. Its totient is φ = 1154896186800.

The previous prime is 1166445148733. The next prime is 1166445148853. The reversal of 1166445148769 is 9678415446611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 746038150225 + 420406998544 = 863735^2 + 648388^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166445148769 - 2¹² = 1166445144673 is a prime.

It is a super-2 number, since 2×1166445148769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1166445148669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5774480834 + ... + 5774481035.

It is an arithmetic number, because the mean of its divisors is an integer number (294498527685).

Almost surely, 2^{1166445148769} is an apocalyptic number.

It is an amenable number.

1166445148769 is a deficient number, since it is larger than the sum of its proper divisors (11548961971).

1166445148769 is a wasteful number, since it uses less digits than its factorization.

1166445148769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11548961970.

The product of its digits is 34836480, while the sum is 62.

The spelling of 1166445148769 in words is "one trillion, one hundred sixty-six billion, four hundred forty-five million, one hundred forty-eight thousand, seven hundred sixty-nine".