1166421060803 has 4 divisors (see below), whose sum is σ = 1166566562280. Its totient is φ = 1166275559328.

The previous prime is 1166421060757. The next prime is 1166421060817. The reversal of 1166421060803 is 3080601246611.

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

It is a cyclic number.

It is not a de Polignac number, because 1166421060803 - 2⁸ = 1166421060547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166421060853) 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, 72738713 + ... + 72754746.

It is an arithmetic number, because the mean of its divisors is an integer number (291641640570).

Almost surely, 2^{1166421060803} is an apocalyptic number.

1166421060803 is a deficient number, since it is larger than the sum of its proper divisors (145501477).

1166421060803 is an equidigital number, since it uses as much as digits as its factorization.

1166421060803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145501476.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 1166421060803 in words is "one trillion, one hundred sixty-six billion, four hundred twenty-one million, sixty thousand, eight hundred three".