11528126018 has 4 divisors (see below), whose sum is σ = 17292189030. Its totient is φ = 5764063008.

The previous prime is 11528126017. The next prime is 11528126021. The reversal of 11528126018 is 81062182511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81062182511 = 113 ⋅717364447.

It can be written as a sum of positive squares in only one way, i.e., 11161288609 + 366837409 = 105647^2 + 19153^2 .

It is not an unprimeable number, because it can be changed into a prime (11528126011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2882031503 + ... + 2882031506.

Almost surely, 2^11528126018 is an apocalyptic number.

11528126018 is a deficient number, since it is larger than the sum of its proper divisors (5764063012).

11528126018 is an equidigital number, since it uses as much as digits as its factorization.

11528126018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764063011.

The product of its (nonzero) digits is 7680, while the sum is 35.

The spelling of 11528126018 in words is "eleven billion, five hundred twenty-eight million, one hundred twenty-six thousand, eighteen".