520098143809 has 2 divisors, whose sum is σ = 520098143810. Its totient is φ = 520098143808.

The previous prime is 520098143783. The next prime is 520098143827. The reversal of 520098143809 is 908341890025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520089053584 + 9090225 = 721172^2 + 3015^2 .

It is a cyclic number.

It is not a de Polignac number, because 520098143809 - 2¹³ = 520098135617 is a prime.

It is not a weakly prime, because it can be changed into another prime (520098143869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260049071904 + 260049071905.

It is an arithmetic number, because the mean of its divisors is an integer number (260049071905).

Almost surely, 2^520098143809 is an apocalyptic number.

It is an amenable number.

520098143809 is a deficient number, since it is larger than the sum of its proper divisors (1).

520098143809 is an equidigital number, since it uses as much as digits as its factorization.

520098143809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 520098143809 in words is "five hundred twenty billion, ninety-eight million, one hundred forty-three thousand, eight hundred nine".