11232173545 has 4 divisors (see below), whose sum is σ = 13478608260. Its totient is φ = 8985738832.

The previous prime is 11232173531. The next prime is 11232173647. The reversal of 11232173545 is 54537123211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6797013136 + 4435160409 = 82444^2 + 66597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11232173545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11232173545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123217350 + ... + 1123217359.

It is an arithmetic number, because the mean of its divisors is an integer number (3369652065).

Almost surely, 2^11232173545 is an apocalyptic number.

It is an amenable number.

11232173545 is a deficient number, since it is larger than the sum of its proper divisors (2246434715).

11232173545 is an equidigital number, since it uses as much as digits as its factorization.

11232173545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246434714.

The product of its digits is 25200, while the sum is 34.

Adding to 11232173545 its reverse (54537123211), we get a palindrome (65769296756).

The spelling of 11232173545 in words is "eleven billion, two hundred thirty-two million, one hundred seventy-three thousand, five hundred forty-five".