111560949553 has 2 divisors, whose sum is σ = 111560949554. Its totient is φ = 111560949552.

The previous prime is 111560949491. The next prime is 111560949569. The reversal of 111560949553 is 355949065111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95847825649 + 15713123904 = 309593^2 + 125352^2 .

It is a cyclic number.

It is not a de Polignac number, because 111560949553 - 2⁹ = 111560949041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111560949497 and 111560949506.

It is not a weakly prime, because it can be changed into another prime (111560949653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55780474776 + 55780474777.

It is an arithmetic number, because the mean of its divisors is an integer number (55780474777).

Almost surely, 2^111560949553 is an apocalyptic number.

It is an amenable number.

111560949553 is a deficient number, since it is larger than the sum of its proper divisors (1).

111560949553 is an equidigital number, since it uses as much as digits as its factorization.

111560949553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 49.

The spelling of 111560949553 in words is "one hundred eleven billion, five hundred sixty million, nine hundred forty-nine thousand, five hundred fifty-three".