1123666610399 has 2 divisors, whose sum is σ = 1123666610400. Its totient is φ = 1123666610398.

The previous prime is 1123666610333. The next prime is 1123666610447. The reversal of 1123666610399 is 9930166663211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123666610399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1123666610399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123666610699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561833305199 + 561833305200.

It is an arithmetic number, because the mean of its divisors is an integer number (561833305200).

Almost surely, 2^{1123666610399} is an apocalyptic number.

1123666610399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123666610399 is an equidigital number, since it uses as much as digits as its factorization.

1123666610399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The spelling of 1123666610399 in words is "one trillion, one hundred twenty-three billion, six hundred sixty-six million, six hundred ten thousand, three hundred ninety-nine".