11447105503 has 16 divisors (see below), whose sum is σ = 12232192000. Its totient is φ = 10681517952.

The previous prime is 11447105489. The next prime is 11447105513. The reversal of 11447105503 is 30550174411.

It is a cyclic number.

It is not a de Polignac number, because 11447105503 - 2⁵ = 11447105471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11447105513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318343 + ... + 352471.

It is an arithmetic number, because the mean of its divisors is an integer number (764512000).

Almost surely, 2^11447105503 is an apocalyptic number.

11447105503 is a deficient number, since it is larger than the sum of its proper divisors (785086497).

11447105503 is a wasteful number, since it uses less digits than its factorization.

11447105503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34414.

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 11447105503 its reverse (30550174411), we get a palindrome (41997279914).

The spelling of 11447105503 in words is "eleven billion, four hundred forty-seven million, one hundred five thousand, five hundred three".