11891306797133 has 16 divisors (see below), whose sum is σ = 12298282905600. Its totient is φ = 11485811715840.

The previous prime is 11891306797127. The next prime is 11891306797169. The reversal of 11891306797133 is 33179760319811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11891306797133 - 2¹⁶ = 11891306731597 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11891306799133) 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, 36820085 + ... + 37141637.

It is an arithmetic number, because the mean of its divisors is an integer number (768642681600).

Almost surely, 2^{11891306797133} is an apocalyptic number.

It is an amenable number.

11891306797133 is a deficient number, since it is larger than the sum of its proper divisors (406976108467).

11891306797133 is a wasteful number, since it uses less digits than its factorization.

11891306797133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323852.

The product of its (nonzero) digits is 5143824, while the sum is 59.

The spelling of 11891306797133 in words is "eleven trillion, eight hundred ninety-one billion, three hundred six million, seven hundred ninety-seven thousand, one hundred thirty-three".