11878711228133 has 24 divisors (see below), whose sum is σ = 12962314509816. Its totient is φ = 10873924617600.

The previous prime is 11878711228129. The next prime is 11878711228171. The reversal of 11878711228133 is 33182211787811.

It can be written as a sum of positive squares in 4 ways, for example, as 3366076387969 + 8512634840164 = 1834687^2 + 2917642^2 .

It is not a de Polignac number, because 11878711228133 - 2² = 11878711228129 is a prime.

It is a super-2 number, since 2×11878711228133² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11878711227133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3780578 + ... + 6168483.

It is an arithmetic number, because the mean of its divisors is an integer number (540096437909).

Almost surely, 2^{11878711228133} is an apocalyptic number.

It is an amenable number.

11878711228133 is a deficient number, since it is larger than the sum of its proper divisors (1083603281683).

11878711228133 is an equidigital number, since it uses as much as digits as its factorization.

11878711228133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9949205 (or 9949182 counting only the distinct ones).

The product of its digits is 903168, while the sum is 53.

The spelling of 11878711228133 in words is "eleven trillion, eight hundred seventy-eight billion, seven hundred eleven million, two hundred twenty-eight thousand, one hundred thirty-three".