11403403440 has 480 divisors, whose sum is σ = 42544776960. Its totient is φ = 2503987200.

The previous prime is 11403403433. The next prime is 11403403457. The reversal of 11403403440 is 4430430411.

It is a super-2 number, since 2×11403403440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11403403440.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27215551 + ... + 27215969.

It is an arithmetic number, because the mean of its divisors is an integer number (88634952).

Almost surely, 2^11403403440 is an apocalyptic number.

11403403440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11403403440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21272388480).

11403403440 is an abundant number, since it is smaller than the sum of its proper divisors (31141373520).

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

11403403440 is a wasteful number, since it uses less digits than its factorization.

11403403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 11403403440 its reverse (4430430411), we get a palindrome (15833833851).

The spelling of 11403403440 in words is "eleven billion, four hundred three million, four hundred three thousand, four hundred forty".