11541004505 has 4 divisors (see below), whose sum is σ = 13849205412. Its totient is φ = 9232803600.

The previous prime is 11541004499. The next prime is 11541004507. The reversal of 11541004505 is 50540014511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50540014511 = 7 ⋅7220002073.

It can be written as a sum of positive squares in 2 ways, for example, as 6795034624 + 4745969881 = 82432^2 + 68891^2 .

It is not a de Polignac number, because 11541004505 - 2⁶ = 11541004441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11541004507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154100446 + ... + 1154100455.

It is an arithmetic number, because the mean of its divisors is an integer number (3462301353).

Almost surely, 2^11541004505 is an apocalyptic number.

It is an amenable number.

11541004505 is a deficient number, since it is larger than the sum of its proper divisors (2308200907).

11541004505 is an equidigital number, since it uses as much as digits as its factorization.

11541004505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308200906.

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 11541004505 in words is "eleven billion, five hundred forty-one million, four thousand, five hundred five".