11401223440 has 40 divisors (see below), whose sum is σ = 26710219008. Its totient is φ = 4525672320.

The previous prime is 11401223437. The next prime is 11401223443. The reversal of 11401223440 is 4432210411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11401223437) and next prime (11401223443).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (11401223443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533472 + ... + 554431.

Almost surely, 2^11401223440 is an apocalyptic number.

11401223440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11401223440 is an abundant number, since it is smaller than the sum of its proper divisors (15308995568).

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

11401223440 is a wasteful number, since it uses less digits than its factorization.

11401223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088047 (or 1088041 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11401223440 its reverse (4432210411), we get a palindrome (15833433851).

The spelling of 11401223440 in words is "eleven billion, four hundred one million, two hundred twenty-three thousand, four hundred forty".