520240650406247 has 2 divisors, whose sum is σ = 520240650406248. Its totient is φ = 520240650406246.

The previous prime is 520240650406157. The next prime is 520240650406303. The reversal of 520240650406247 is 742604056042025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520240650406247 - 2⁸ = 520240650405991 is a prime.

It is a super-2 number, since 2×520240650406247² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520240650405247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260120325203123 + 260120325203124.

It is an arithmetic number, because the mean of its divisors is an integer number (260120325203124).

Almost surely, 2^{520240650406247} is an apocalyptic number.

520240650406247 is a deficient number, since it is larger than the sum of its proper divisors (1).

520240650406247 is an equidigital number, since it uses as much as digits as its factorization.

520240650406247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3225600, while the sum is 47.

The spelling of 520240650406247 in words is "five hundred twenty trillion, two hundred forty billion, six hundred fifty million, four hundred six thousand, two hundred forty-seven".