111579005441 has 2 divisors, whose sum is σ = 111579005442. Its totient is φ = 111579005440.

The previous prime is 111579005381. The next prime is 111579005513. The reversal of 111579005441 is 144500975111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60289891600 + 51289113841 = 245540^2 + 226471^2 .

It is an emirp because it is prime and its reverse (144500975111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111579005441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111579005395 and 111579005404.

It is not a weakly prime, because it can be changed into another prime (111579004441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55789502720 + 55789502721.

It is an arithmetic number, because the mean of its divisors is an integer number (55789502721).

Almost surely, 2^111579005441 is an apocalyptic number.

It is an amenable number.

111579005441 is a deficient number, since it is larger than the sum of its proper divisors (1).

111579005441 is an equidigital number, since it uses as much as digits as its factorization.

111579005441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 38.

The spelling of 111579005441 in words is "one hundred eleven billion, five hundred seventy-nine million, five thousand, four hundred forty-one".