520405542463 has 2 divisors, whose sum is σ = 520405542464. Its totient is φ = 520405542462.

The previous prime is 520405542421. The next prime is 520405542473. The reversal of 520405542463 is 364245504025.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520405542463 is a prime.

It is a super-2 number, since 2×520405542463² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520405542473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260202771231 + 260202771232.

It is an arithmetic number, because the mean of its divisors is an integer number (260202771232).

Almost surely, 2^520405542463 is an apocalyptic number.

520405542463 is a deficient number, since it is larger than the sum of its proper divisors (1).

520405542463 is an equidigital number, since it uses as much as digits as its factorization.

520405542463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576000, while the sum is 40.

The spelling of 520405542463 in words is "five hundred twenty billion, four hundred five million, five hundred forty-two thousand, four hundred sixty-three".