123535315909 has 2 divisors, whose sum is σ = 123535315910. Its totient is φ = 123535315908.

The previous prime is 123535315861. The next prime is 123535315957. The reversal of 123535315909 is 909513535321.

It is a balanced prime because it is at equal distance from previous prime (123535315861) and next prime (123535315957).

It can be written as a sum of positive squares in only one way, i.e., 95413032100 + 28122283809 = 308890^2 + 167697^2 .

It is a cyclic number.

It is not a de Polignac number, because 123535315909 - 2¹⁹ = 123534791621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123535315999) 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, 61767657954 + 61767657955.

It is an arithmetic number, because the mean of its divisors is an integer number (61767657955).

Almost surely, 2^123535315909 is an apocalyptic number.

It is an amenable number.

123535315909 is a deficient number, since it is larger than the sum of its proper divisors (1).

123535315909 is an equidigital number, since it uses as much as digits as its factorization.

123535315909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 546750, while the sum is 46.

The spelling of 123535315909 in words is "one hundred twenty-three billion, five hundred thirty-five million, three hundred fifteen thousand, nine hundred nine".