111678453641 has 2 divisors, whose sum is σ = 111678453642. Its totient is φ = 111678453640.

The previous prime is 111678453619. The next prime is 111678453647. The reversal of 111678453641 is 146354876111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76551822400 + 35126631241 = 276680^2 + 187421^2 .

It is a cyclic number.

It is not a de Polignac number, because 111678453641 - 2¹⁰ = 111678452617 is a prime.

It is not a weakly prime, because it can be changed into another prime (111678453647) 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, 55839226820 + 55839226821.

It is an arithmetic number, because the mean of its divisors is an integer number (55839226821).

Almost surely, 2^111678453641 is an apocalyptic number.

It is an amenable number.

111678453641 is a deficient number, since it is larger than the sum of its proper divisors (1).

111678453641 is an equidigital number, since it uses as much as digits as its factorization.

111678453641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The spelling of 111678453641 in words is "one hundred eleven billion, six hundred seventy-eight million, four hundred fifty-three thousand, six hundred forty-one".