52423666409 has 2 divisors, whose sum is σ = 52423666410. Its totient is φ = 52423666408.

The previous prime is 52423666397. The next prime is 52423666423. The reversal of 52423666409 is 90466632425.

It is a happy number.

52423666409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51019515625 + 1404150784 = 225875^2 + 37472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52423666409 is a prime.

It is a super-2 number, since 2×52423666409² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52423666459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26211833204 + 26211833205.

It is an arithmetic number, because the mean of its divisors is an integer number (26211833205).

Almost surely, 2^52423666409 is an apocalyptic number.

It is an amenable number.

52423666409 is a deficient number, since it is larger than the sum of its proper divisors (1).

52423666409 is an equidigital number, since it uses as much as digits as its factorization.

52423666409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 52423666409 in words is "fifty-two billion, four hundred twenty-three million, six hundred sixty-six thousand, four hundred nine".