11173361553 has 12 divisors (see below), whose sum is σ = 16140284160. Its totient is φ = 7448453496.

The previous prime is 11173361509. The next prime is 11173361557. The reversal of 11173361553 is 35516337111.

11173361553 is a `hidden beast` number, since 1 + 1 + 1 + 7 + 33 + 615 + 5 + 3 = 666.

It is not a de Polignac number, because 11173361553 - 2²⁴ = 11156584337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11173361557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190368 + ... + 242046.

It is an arithmetic number, because the mean of its divisors is an integer number (1345023680).

Almost surely, 2^11173361553 is an apocalyptic number.

It is an amenable number.

11173361553 is a deficient number, since it is larger than the sum of its proper divisors (4966922607).

11173361553 is a wasteful number, since it uses less digits than its factorization.

11173361553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75708 (or 75705 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

Adding to 11173361553 its reverse (35516337111), we get a palindrome (46689698664).

The spelling of 11173361553 in words is "eleven billion, one hundred seventy-three million, three hundred sixty-one thousand, five hundred fifty-three".