11128081307540 has 36 divisors (see below), whose sum is σ = 23585332395996. Its totient is φ = 4410395433216.

The previous prime is 11128081307533. The next prime is 11128081307557. The reversal of 11128081307540 is 4570318082111.

It can be written as a sum of positive squares in 6 ways, for example, as 4282131844 + 11123799175696 = 65438^2 + 3335236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23178089 + ... + 23653328.

It is an arithmetic number, because the mean of its divisors is an integer number (655148122111).

Almost surely, 2^{11128081307540} is an apocalyptic number.

11128081307540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11128081307540 is an abundant number, since it is smaller than the sum of its proper divisors (12457251088456).

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

11128081307540 is a wasteful number, since it uses less digits than its factorization.

11128081307540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46831644 (or 46831533 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 41.

Adding to 11128081307540 its reverse (4570318082111), we get a palindrome (15698399389651).

The spelling of 11128081307540 in words is "eleven trillion, one hundred twenty-eight billion, eighty-one million, three hundred seven thousand, five hundred forty".