111660663806077 has 2 divisors, whose sum is σ = 111660663806078. Its totient is φ = 111660663806076.

The previous prime is 111660663806051. The next prime is 111660663806161. The reversal of 111660663806077 is 770608366066111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68948544032676 + 42712119773401 = 8303526^2 + 6535451^2 .

It is a cyclic number.

It is not a de Polignac number, because 111660663806077 - 2¹¹ = 111660663804029 is a prime.

It is a super-2 number, since 2×111660663806077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111660663806047) 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, 55830331903038 + 55830331903039.

It is an arithmetic number, because the mean of its divisors is an integer number (55830331903039).

Almost surely, 2^{111660663806077} is an apocalyptic number.

It is an amenable number.

111660663806077 is a deficient number, since it is larger than the sum of its proper divisors (1).

111660663806077 is an equidigital number, since it uses as much as digits as its factorization.

111660663806077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 111660663806077 in words is "one hundred eleven trillion, six hundred sixty billion, six hundred sixty-three million, eight hundred six thousand, seventy-seven".