1123705308457 has 2 divisors, whose sum is σ = 1123705308458. Its totient is φ = 1123705308456.

The previous prime is 1123705308281. The next prime is 1123705308487. The reversal of 1123705308457 is 7548035073211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123640280361 + 65028096 = 1060019^2 + 8064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123705308457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123705308487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561852654228 + 561852654229.

It is an arithmetic number, because the mean of its divisors is an integer number (561852654229).

Almost surely, 2^{1123705308457} is an apocalyptic number.

It is an amenable number.

1123705308457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123705308457 is an equidigital number, since it uses as much as digits as its factorization.

1123705308457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 1123705308457 in words is "one trillion, one hundred twenty-three billion, seven hundred five million, three hundred eight thousand, four hundred fifty-seven".