111440863841 has 2 divisors, whose sum is σ = 111440863842. Its totient is φ = 111440863840.

The previous prime is 111440863829. The next prime is 111440863847. The reversal of 111440863841 is 148368044111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69522396241 + 41918467600 = 263671^2 + 204740^2 .

It is a cyclic number.

It is not a de Polignac number, because 111440863841 - 2¹⁸ = 111440601697 is a prime.

It is a super-2 number, since 2×111440863841² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111440863847) 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, 55720431920 + 55720431921.

It is an arithmetic number, because the mean of its divisors is an integer number (55720431921).

Almost surely, 2^111440863841 is an apocalyptic number.

It is an amenable number.

111440863841 is a deficient number, since it is larger than the sum of its proper divisors (1).

111440863841 is an equidigital number, since it uses as much as digits as its factorization.

111440863841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 111440863841 in words is "one hundred eleven billion, four hundred forty million, eight hundred sixty-three thousand, eight hundred forty-one".