11881882128805 has 12 divisors (see below), whose sum is σ = 15439416069060. Its totient is φ = 8774312956032.

The previous prime is 11881882128763. The next prime is 11881882128817. The reversal of 11881882128805 is 50882128818811.

It can be written as a sum of positive squares in 6 ways, for example, as 1090282635556 + 10791599493249 = 1044166^2 + 3285057^2 .

It is not a de Polignac number, because 11881882128805 - 2¹⁹ = 11881881604517 is a prime.

It is a super-2 number, since 2×11881882128805² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7030698640 + ... + 7030700329.

It is an arithmetic number, because the mean of its divisors is an integer number (1286618005755).

Almost surely, 2^{11881882128805} is an apocalyptic number.

It is an amenable number.

11881882128805 is a deficient number, since it is larger than the sum of its proper divisors (3557533940255).

11881882128805 is a wasteful number, since it uses less digits than its factorization.

11881882128805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14061399000 (or 14061398987 counting only the distinct ones).

The product of its (nonzero) digits is 5242880, while the sum is 61.

The spelling of 11881882128805 in words is "eleven trillion, eight hundred eighty-one billion, eight hundred eighty-two million, one hundred twenty-eight thousand, eight hundred five".