11161040553 has 24 divisors (see below), whose sum is σ = 18275391680. Its totient is φ = 6506840160.

The previous prime is 11161040537. The next prime is 11161040581. The reversal of 11161040553 is 35504016111.

11161040553 is a `hidden beast` number, since 1 + 1 + 1 + 6 + 104 + 0 + 553 = 666.

It is not a de Polignac number, because 11161040553 - 2⁴ = 11161040537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11161040593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2508133 + ... + 2512578.

Almost surely, 2^11161040553 is an apocalyptic number.

11161040553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11161040553 is a deficient number, since it is larger than the sum of its proper divisors (7114351127).

11161040553 is a wasteful number, since it uses less digits than its factorization.

11161040553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020749 (or 5020746 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 11161040553 its reverse (35504016111), we get a palindrome (46665056664).

The spelling of 11161040553 in words is "eleven billion, one hundred sixty-one million, forty thousand, five hundred fifty-three".