11115453553 has 6 divisors (see below), whose sum is σ = 11807765846. Its totient is φ = 10461603072.

The previous prime is 11115453533. The next prime is 11115453563. The reversal of 11115453553 is 35535451111.

It can be written as a sum of positive squares in 3 ways, for example, as 1343735649 + 9771717904 = 36657^2 + 98852^2 .

It is not a de Polignac number, because 11115453553 - 2⁵ = 11115453521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11115453533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19230600 + ... + 19231177.

Almost surely, 2^11115453553 is an apocalyptic number.

It is an amenable number.

11115453553 is a deficient number, since it is larger than the sum of its proper divisors (692312293).

11115453553 is an equidigital number, since it uses as much as digits as its factorization.

11115453553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38461811 (or 38461794 counting only the distinct ones).

The product of its digits is 22500, while the sum is 34.

The spelling of 11115453553 in words is "eleven billion, one hundred fifteen million, four hundred fifty-three thousand, five hundred fifty-three".