111145558273 has 2 divisors, whose sum is σ = 111145558274. Its totient is φ = 111145558272.

The previous prime is 111145558211. The next prime is 111145558291. The reversal of 111145558273 is 372855541111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56505093264 + 54640465009 = 237708^2 + 233753^2 .

It is an emirp because it is prime and its reverse (372855541111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111145558273 - 2²⁹ = 110608687361 is a prime.

It is not a weakly prime, because it can be changed into another prime (111145558873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55572779136 + 55572779137.

It is an arithmetic number, because the mean of its divisors is an integer number (55572779137).

Almost surely, 2^111145558273 is an apocalyptic number.

It is an amenable number.

111145558273 is a deficient number, since it is larger than the sum of its proper divisors (1).

111145558273 is an equidigital number, since it uses as much as digits as its factorization.

111145558273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 43.

The spelling of 111145558273 in words is "one hundred eleven billion, one hundred forty-five million, five hundred fifty-eight thousand, two hundred seventy-three".