11554144445 has 4 divisors (see below), whose sum is σ = 13864973340. Its totient is φ = 9243315552.

The previous prime is 11554144429. The next prime is 11554144487. The reversal of 11554144445 is 54444145511.

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 2641651609 + 8912492836 = 51397^2 + 94406^2 .

It is a cyclic number.

It is not a de Polignac number, because 11554144445 - 2⁴ = 11554144429 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11554144399 and 11554144408.

It is a congruent number.

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, 1155414440 + ... + 1155414449.

It is an arithmetic number, because the mean of its divisors is an integer number (3466243335).

Almost surely, 2^11554144445 is an apocalyptic number.

It is an amenable number.

11554144445 is a deficient number, since it is larger than the sum of its proper divisors (2310828895).

11554144445 is an equidigital number, since it uses as much as digits as its factorization.

11554144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310828894.

The product of its digits is 128000, while the sum is 38.

Adding to 11554144445 its reverse (54444145511), we get a palindrome (65998289956).

The spelling of 11554144445 in words is "eleven billion, five hundred fifty-four million, one hundred forty-four thousand, four hundred forty-five".