11440681411 has 4 divisors (see below), whose sum is σ = 11461221792. Its totient is φ = 11420141032.

The previous prime is 11440681397. The next prime is 11440681463. The reversal of 11440681411 is 11418604411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11440681411 - 2⁹ = 11440680899 is a prime.

It is a super-2 number, since 2×11440681411² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11440681481) 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 3 ways as a sum of consecutive naturals, for example, 10269355 + ... + 10270468.

It is an arithmetic number, because the mean of its divisors is an integer number (2865305448).

Almost surely, 2^11440681411 is an apocalyptic number.

11440681411 is a deficient number, since it is larger than the sum of its proper divisors (20540381).

11440681411 is an equidigital number, since it uses as much as digits as its factorization.

11440681411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20540380.

The product of its (nonzero) digits is 3072, while the sum is 31.

The spelling of 11440681411 in words is "eleven billion, four hundred forty million, six hundred eighty-one thousand, four hundred eleven".