111605049977 has 2 divisors, whose sum is σ = 111605049978. Its totient is φ = 111605049976.

The previous prime is 111605049953. The next prime is 111605050009. The reversal of 111605049977 is 779940506111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62194873321 + 49410176656 = 249389^2 + 222284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111605049977 is a prime.

It is not a weakly prime, because it can be changed into another prime (111605049077) 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, 55802524988 + 55802524989.

It is an arithmetic number, because the mean of its divisors is an integer number (55802524989).

Almost surely, 2^111605049977 is an apocalyptic number.

It is an amenable number.

111605049977 is a deficient number, since it is larger than the sum of its proper divisors (1).

111605049977 is an equidigital number, since it uses as much as digits as its factorization.

111605049977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 50.

The spelling of 111605049977 in words is "one hundred eleven billion, six hundred five million, forty-nine thousand, nine hundred seventy-seven".