11911258045 has 4 divisors (see below), whose sum is σ = 14293509660. Its totient is φ = 9529006432.

The previous prime is 11911258031. The next prime is 11911258067. The reversal of 11911258045 is 54085211911.

It is a happy number.

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 2606919364 + 9304338681 = 51058^2 + 96459^2 .

It is a cyclic number.

It is not a de Polignac number, because 11911258045 - 2¹¹ = 11911255997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11911257995 and 11911258013.

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, 1191125800 + ... + 1191125809.

It is an arithmetic number, because the mean of its divisors is an integer number (3573377415).

Almost surely, 2^11911258045 is an apocalyptic number.

It is an amenable number.

11911258045 is a deficient number, since it is larger than the sum of its proper divisors (2382251615).

11911258045 is an equidigital number, since it uses as much as digits as its factorization.

11911258045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382251614.

The product of its (nonzero) digits is 14400, while the sum is 37.

Adding to 11911258045 its reverse (54085211911), we get a palindrome (65996469956).

The spelling of 11911258045 in words is "eleven billion, nine hundred eleven million, two hundred fifty-eight thousand, forty-five".