1166121244365 has 128 divisors (see below), whose sum is σ = 2453037281280. Its totient is φ = 458286336000.

The previous prime is 1166121244363. The next prime is 1166121244381. The reversal of 1166121244365 is 5634421216611.

It is not a de Polignac number, because 1166121244365 - 2¹ = 1166121244363 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166121244363) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12175665 + ... + 12271065.

It is an arithmetic number, because the mean of its divisors is an integer number (19164353760).

Almost surely, 2^{1166121244365} is an apocalyptic number.

1166121244365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166121244365 is an abundant number, since it is smaller than the sum of its proper divisors (1286916036915).

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

1166121244365 is a wasteful number, since it uses less digits than its factorization.

1166121244365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96003.

The product of its digits is 207360, while the sum is 42.

The spelling of 1166121244365 in words is "one trillion, one hundred sixty-six billion, one hundred twenty-one million, two hundred forty-four thousand, three hundred sixty-five".