1166814449321 has 4 divisors (see below), whose sum is σ = 1166824569600. Its totient is φ = 1166804329044.

The previous prime is 1166814449231. The next prime is 1166814449351. The reversal of 1166814449321 is 1239444186611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1166814449321 - 2¹⁸ = 1166814187177 is a prime.

It is a super-2 number, since 2×1166814449321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166814449321.

It is not an unprimeable number, because it can be changed into a prime (1166814449351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4885181 + ... + 5118458.

It is an arithmetic number, because the mean of its divisors is an integer number (291706142400).

Almost surely, 2^{1166814449321} is an apocalyptic number.

It is an amenable number.

1166814449321 is a deficient number, since it is larger than the sum of its proper divisors (10120279).

1166814449321 is a wasteful number, since it uses less digits than its factorization.

1166814449321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120278.

The product of its digits is 995328, while the sum is 50.

The spelling of 1166814449321 in words is "one trillion, one hundred sixty-six billion, eight hundred fourteen million, four hundred forty-nine thousand, three hundred twenty-one".