11403455540 has 12 divisors (see below), whose sum is σ = 23947256676. Its totient is φ = 4561382208.

The previous prime is 11403455527. The next prime is 11403455561. The reversal of 11403455540 is 4555430411.

It can be written as a sum of positive squares in 2 ways, for example, as 1411054096 + 9992401444 = 37564^2 + 99962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11403455497 and 11403455506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285086369 + ... + 285086408.

It is an arithmetic number, because the mean of its divisors is an integer number (1995604723).

Almost surely, 2^11403455540 is an apocalyptic number.

11403455540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11403455540 is an abundant number, since it is smaller than the sum of its proper divisors (12543801136).

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

11403455540 is a wasteful number, since it uses less digits than its factorization.

11403455540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570172786 (or 570172784 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 11403455540 its reverse (4555430411), we get a palindrome (15958885951).

The spelling of 11403455540 in words is "eleven billion, four hundred three million, four hundred fifty-five thousand, five hundred forty".