111774866149 has 2 divisors, whose sum is σ = 111774866150. Its totient is φ = 111774866148.

The previous prime is 111774866107. The next prime is 111774866171. The reversal of 111774866149 is 941668477111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108278509249 + 3496356900 = 329057^2 + 59130^2 .

It is a cyclic number.

It is not a de Polignac number, because 111774866149 - 2¹⁵ = 111774833381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111774866149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111774866179) 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, 55887433074 + 55887433075.

It is an arithmetic number, because the mean of its divisors is an integer number (55887433075).

Almost surely, 2^111774866149 is an apocalyptic number.

It is an amenable number.

111774866149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111774866149 is an equidigital number, since it uses as much as digits as its factorization.

111774866149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 55.

The spelling of 111774866149 in words is "one hundred eleven billion, seven hundred seventy-four million, eight hundred sixty-six thousand, one hundred forty-nine".