11323478540 has 24 divisors (see below), whose sum is σ = 25941060432. Its totient is φ = 4117628480.

The previous prime is 11323478539. The next prime is 11323478561. The reversal of 11323478540 is 4587432311.

It is a junction number, because it is equal to n+sod(n) for n = 11323478494 and 11323478503.

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, 25734959 + ... + 25735398.

It is an arithmetic number, because the mean of its divisors is an integer number (1080877518).

Almost surely, 2^11323478540 is an apocalyptic number.

11323478540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11323478540 is an abundant number, since it is smaller than the sum of its proper divisors (14617581892).

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

11323478540 is a wasteful number, since it uses less digits than its factorization.

11323478540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51470377 (or 51470375 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 11323478540 in words is "eleven billion, three hundred twenty-three million, four hundred seventy-eight thousand, five hundred forty".