11203140545 has 4 divisors (see below), whose sum is σ = 13443768660. Its totient is φ = 8962512432.

The previous prime is 11203140511. The next prime is 11203140547. The reversal of 11203140545 is 54504130211.

11203140545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54504130211 = 7457 ⋅7309123.

It can be written as a sum of positive squares in 2 ways, for example, as 8384698624 + 2818441921 = 91568^2 + 53089^2 .

It is a cyclic number.

It is not a de Polignac number, because 11203140545 - 2¹⁴ = 11203124161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11203140547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120314050 + ... + 1120314059.

It is an arithmetic number, because the mean of its divisors is an integer number (3360942165).

Almost surely, 2^11203140545 is an apocalyptic number.

It is an amenable number.

11203140545 is a deficient number, since it is larger than the sum of its proper divisors (2240628115).

11203140545 is an equidigital number, since it uses as much as digits as its factorization.

11203140545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240628114.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 11203140545 its reverse (54504130211), we get a palindrome (65707270756).

The spelling of 11203140545 in words is "eleven billion, two hundred three million, one hundred forty thousand, five hundred forty-five".