1166789012233 has 4 divisors (see below), whose sum is σ = 1256542013188. Its totient is φ = 1077036011280.

The previous prime is 1166789012203. The next prime is 1166789012261. The reversal of 1166789012233 is 3322109876611.

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 260347919049 + 906441093184 = 510243^2 + 952072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166789012233 - 2²⁵ = 1166755457801 is a prime.

It is a super-2 number, since 2×1166789012233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166789012203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44876500458 + ... + 44876500483.

It is an arithmetic number, because the mean of its divisors is an integer number (314135503297).

Almost surely, 2^{1166789012233} is an apocalyptic number.

1166789012233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1166789012233 is a deficient number, since it is larger than the sum of its proper divisors (89753000955).

1166789012233 is an equidigital number, since it uses as much as digits as its factorization.

1166789012233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89753000954.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 1166789012233 in words is "one trillion, one hundred sixty-six billion, seven hundred eighty-nine million, twelve thousand, two hundred thirty-three".