123523809797 has 2 divisors, whose sum is σ = 123523809798. Its totient is φ = 123523809796.

The previous prime is 123523809781. The next prime is 123523809833. The reversal of 123523809797 is 797908325321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82409759041 + 41114050756 = 287071^2 + 202766^2 .

It is an emirp because it is prime and its reverse (797908325321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123523809797 - 2⁴ = 123523809781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123523809757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61761904898 + 61761904899.

It is an arithmetic number, because the mean of its divisors is an integer number (61761904899).

Almost surely, 2^123523809797 is an apocalyptic number.

It is an amenable number.

123523809797 is a deficient number, since it is larger than the sum of its proper divisors (1).

123523809797 is an equidigital number, since it uses as much as digits as its factorization.

123523809797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 123523809797 in words is "one hundred twenty-three billion, five hundred twenty-three million, eight hundred nine thousand, seven hundred ninety-seven".