111408185639573 has 2 divisors, whose sum is σ = 111408185639574. Its totient is φ = 111408185639572.

The previous prime is 111408185639537. The next prime is 111408185639603. The reversal of 111408185639573 is 375936581804111.

Together with previous prime (111408185639537) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100857791668804 + 10550393970769 = 10042798^2 + 3248137^2 .

It is a cyclic number.

It is not a de Polignac number, because 111408185639573 - 2¹⁰ = 111408185638549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111408185639873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55704092819786 + 55704092819787.

It is an arithmetic number, because the mean of its divisors is an integer number (55704092819787).

Almost surely, 2^{111408185639573} is an apocalyptic number.

It is an amenable number.

111408185639573 is a deficient number, since it is larger than the sum of its proper divisors (1).

111408185639573 is an equidigital number, since it uses as much as digits as its factorization.

111408185639573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 111408185639573 in words is "one hundred eleven trillion, four hundred eight billion, one hundred eighty-five million, six hundred thirty-nine thousand, five hundred seventy-three".