11403430040 has 32 divisors (see below), whose sum is σ = 26283519360. Its totient is φ = 4450118400.

The previous prime is 11403430033. The next prime is 11403430067. The reversal of 11403430040 is 4003430411.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 11403429994 and 11403430021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3475016 + ... + 3478295.

It is an arithmetic number, because the mean of its divisors is an integer number (821359980).

Almost surely, 2^11403430040 is an apocalyptic number.

11403430040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11403430040 is an abundant number, since it is smaller than the sum of its proper divisors (14880089320).

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

11403430040 is a wasteful number, since it uses less digits than its factorization.

11403430040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6953363 (or 6953359 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 11403430040 its reverse (4003430411), we get a palindrome (15406860451).

The spelling of 11403430040 in words is "eleven billion, four hundred three million, four hundred thirty thousand, forty".