11891306799133 has 2 divisors, whose sum is σ = 11891306799134. Its totient is φ = 11891306799132.

The previous prime is 11891306799101. The next prime is 11891306799149. The reversal of 11891306799133 is 33199760319811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10767310324164 + 1123996474969 = 3281358^2 + 1060187^2 .

It is a cyclic number.

It is not a de Polignac number, because 11891306799133 - 2⁵ = 11891306799101 is a prime.

It is a super-2 number, since 2×11891306799133² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11891306799173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5945653399566 + 5945653399567.

It is an arithmetic number, because the mean of its divisors is an integer number (5945653399567).

Almost surely, 2^{11891306799133} is an apocalyptic number.

It is an amenable number.

11891306799133 is a deficient number, since it is larger than the sum of its proper divisors (1).

11891306799133 is an equidigital number, since it uses as much as digits as its factorization.

11891306799133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6613488, while the sum is 61.

The spelling of 11891306799133 in words is "eleven trillion, eight hundred ninety-one billion, three hundred six million, seven hundred ninety-nine thousand, one hundred thirty-three".