11040145128 has 56 divisors (see below), whose sum is σ = 31036226850. Its totient is φ = 3680046432.

The previous prime is 11040145121. The next prime is 11040145157. The reversal of 11040145128 is 82154104011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6534782244 + 4505362884 = 80838^2 + 67122^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11040145121) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 940683 + ... + 952346.

Almost surely, 2^11040145128 is an apocalyptic number.

11040145128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11040145128 is an abundant number, since it is smaller than the sum of its proper divisors (19996081722).

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

11040145128 is an equidigital number, since it uses as much as digits as its factorization.

11040145128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893053 (or 1893034 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

Adding to 11040145128 its reverse (82154104011), we get a palindrome (93194249139).

The spelling of 11040145128 in words is "eleven billion, forty million, one hundred forty-five thousand, one hundred twenty-eight".