111765385993 has 2 divisors, whose sum is σ = 111765385994. Its totient is φ = 111765385992.

The previous prime is 111765385967. The next prime is 111765386011. The reversal of 111765385993 is 399583567111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111296966544 + 468419449 = 333612^2 + 21643^2 .

It is a cyclic number.

It is not a de Polignac number, because 111765385993 - 2²⁹ = 111228515081 is a prime.

It is not a weakly prime, because it can be changed into another prime (111765385933) 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, 55882692996 + 55882692997.

It is an arithmetic number, because the mean of its divisors is an integer number (55882692997).

Almost surely, 2^111765385993 is an apocalyptic number.

It is an amenable number.

111765385993 is a deficient number, since it is larger than the sum of its proper divisors (1).

111765385993 is an equidigital number, since it uses as much as digits as its factorization.

111765385993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 58.

The spelling of 111765385993 in words is "one hundred eleven billion, seven hundred sixty-five million, three hundred eighty-five thousand, nine hundred ninety-three".