1191116611320 has 64 divisors (see below), whose sum is σ = 3577163778720. Its totient is φ = 317292079104.

The previous prime is 1191116611277. The next prime is 1191116611327. The reversal of 1191116611320 is 231166111911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191116611327) 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 15 ways as a sum of consecutive naturals, for example, 5184237 + ... + 5409116.

Almost surely, 2^{1191116611320} is an apocalyptic number.

1191116611320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1191116611320 is an abundant number, since it is smaller than the sum of its proper divisors (2386047167400).

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

1191116611320 is a wasteful number, since it uses less digits than its factorization.

1191116611320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10594304 (or 10594300 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 33.

The spelling of 1191116611320 in words is "one trillion, one hundred ninety-one billion, one hundred sixteen million, six hundred eleven thousand, three hundred twenty".