111443661353 has 2 divisors, whose sum is σ = 111443661354. Its totient is φ = 111443661352.

The previous prime is 111443661337. The next prime is 111443661367. The reversal of 111443661353 is 353166344111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66096810649 + 45346850704 = 257093^2 + 212948^2 .

It is a cyclic number.

It is not a de Polignac number, because 111443661353 - 2⁴ = 111443661337 is a prime.

It is not a weakly prime, because it can be changed into another prime (111403661353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55721830676 + 55721830677.

It is an arithmetic number, because the mean of its divisors is an integer number (55721830677).

Almost surely, 2^111443661353 is an apocalyptic number.

It is an amenable number.

111443661353 is a deficient number, since it is larger than the sum of its proper divisors (1).

111443661353 is an equidigital number, since it uses as much as digits as its factorization.

111443661353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The spelling of 111443661353 in words is "one hundred eleven billion, four hundred forty-three million, six hundred sixty-one thousand, three hundred fifty-three".