11440401140 has 48 divisors (see below), whose sum is σ = 27522633600. Its totient is φ = 3913041792.

The previous prime is 11440401127. The next prime is 11440401143. The reversal of 11440401140 is 4110404411.

It is a happy number.

It is a super-2 number, since 2×11440401140² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11440401143) 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 15 ways as a sum of consecutive naturals, for example, 38855 + ... + 156174.

It is an arithmetic number, because the mean of its divisors is an integer number (573388200).

Almost surely, 2^11440401140 is an apocalyptic number.

11440401140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11440401140 is an abundant number, since it is smaller than the sum of its proper divisors (16082232460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11440401140 is a wasteful number, since it uses less digits than its factorization.

11440401140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195464 (or 195462 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11440401140 its reverse (4110404411), we get a palindrome (15550805551).

The spelling of 11440401140 in words is "eleven billion, four hundred forty million, four hundred one thousand, one hundred forty".