11544882681 has 4 divisors (see below), whose sum is σ = 15393176912. Its totient is φ = 7696588452.

The previous prime is 11544882677. The next prime is 11544882703. The reversal of 11544882681 is 18628844511.

11544882681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11544882681 - 2² = 11544882677 is a prime.

It is a super-2 number, since 2×11544882681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11544882681.

It is not an unprimeable number, because it can be changed into a prime (11544882641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924147111 + ... + 1924147116.

It is an arithmetic number, because the mean of its divisors is an integer number (3848294228).

Almost surely, 2^11544882681 is an apocalyptic number.

It is an amenable number.

11544882681 is a deficient number, since it is larger than the sum of its proper divisors (3848294231).

11544882681 is an equidigital number, since it uses as much as digits as its factorization.

11544882681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848294230.

The product of its digits is 491520, while the sum is 48.

The spelling of 11544882681 in words is "eleven billion, five hundred forty-four million, eight hundred eighty-two thousand, six hundred eighty-one".