660111254433203 has 2 divisors, whose sum is σ = 660111254433204. Its totient is φ = 660111254433202.

The previous prime is 660111254433119. The next prime is 660111254433283. The reversal of 660111254433203 is 302334452111066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660111254433203 - 2¹⁶ = 660111254367667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (660111254433283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330055627216601 + 330055627216602.

It is an arithmetic number, because the mean of its divisors is an integer number (330055627216602).

Almost surely, 2^{660111254433203} is an apocalyptic number.

660111254433203 is a deficient number, since it is larger than the sum of its proper divisors (1).

660111254433203 is an equidigital number, since it uses as much as digits as its factorization.

660111254433203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 660111254433203 in words is "six hundred sixty trillion, one hundred eleven billion, two hundred fifty-four million, four hundred thirty-three thousand, two hundred three".