111520514473 has 2 divisors, whose sum is σ = 111520514474. Its totient is φ = 111520514472.

The previous prime is 111520514467. The next prime is 111520514519. The reversal of 111520514473 is 374415025111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68059939689 + 43460574784 = 260883^2 + 208472^2 .

It is a cyclic number.

It is not a de Polignac number, because 111520514473 - 2²¹ = 111518417321 is a prime.

It is not a weakly prime, because it can be changed into another prime (111520514453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55760257236 + 55760257237.

It is an arithmetic number, because the mean of its divisors is an integer number (55760257237).

Almost surely, 2^111520514473 is an apocalyptic number.

It is an amenable number.

111520514473 is a deficient number, since it is larger than the sum of its proper divisors (1).

111520514473 is an equidigital number, since it uses as much as digits as its factorization.

111520514473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 111520514473 its reverse (374415025111), we get a palindrome (485935539584).

The spelling of 111520514473 in words is "one hundred eleven billion, five hundred twenty million, five hundred fourteen thousand, four hundred seventy-three".