11203215453 has 6 divisors (see below), whose sum is σ = 16182422334. Its totient is φ = 7468810296.

The previous prime is 11203215433. The next prime is 11203215473. The reversal of 11203215453 is 35451230211.

11203215453 is a `hidden beast` number, since 1 + 1 + 203 + 2 + 1 + 5 + 453 = 666.

It is an interprime number because it is at equal distance from previous prime (11203215433) and next prime (11203215473).

It can be written as a sum of positive squares in only one way, i.e., 11185600644 + 17614809 = 105762^2 + 4197^2 .

It is not a de Polignac number, because 11203215453 - 2⁵ = 11203215421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203215403) 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, 622400850 + ... + 622400867.

It is an arithmetic number, because the mean of its divisors is an integer number (2697070389).

Almost surely, 2^11203215453 is an apocalyptic number.

It is an amenable number.

11203215453 is a deficient number, since it is larger than the sum of its proper divisors (4979206881).

11203215453 is a wasteful number, since it uses less digits than its factorization.

11203215453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244801723 (or 1244801720 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 11203215453 its reverse (35451230211), we get a palindrome (46654445664).

The spelling of 11203215453 in words is "eleven billion, two hundred three million, two hundred fifteen thousand, four hundred fifty-three".