11307128540 has 12 divisors (see below), whose sum is σ = 23744969976. Its totient is φ = 4522851408.

The previous prime is 11307128531. The next prime is 11307128561. The reversal of 11307128540 is 4582170311.

It is a junction number, because it is equal to n+sod(n) for n = 11307128497 and 11307128506.

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, 282678194 + ... + 282678233.

It is an arithmetic number, because the mean of its divisors is an integer number (1978747498).

Almost surely, 2^11307128540 is an apocalyptic number.

11307128540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11307128540 is an abundant number, since it is smaller than the sum of its proper divisors (12437841436).

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

11307128540 is a wasteful number, since it uses less digits than its factorization.

11307128540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565356436 (or 565356434 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 11307128540 its reverse (4582170311), we get a palindrome (15889298851).

The spelling of 11307128540 in words is "eleven billion, three hundred seven million, one hundred twenty-eight thousand, five hundred forty".