521476520672047 has 2 divisors, whose sum is σ = 521476520672048. Its totient is φ = 521476520672046.

The previous prime is 521476520671927. The next prime is 521476520672053. The reversal of 521476520672047 is 740276025674125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521476520672047 - 2²³ = 521476512283439 is a prime.

It is a super-2 number, since 2×521476520672047² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 521476520671982 and 521476520672000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521476521672047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260738260336023 + 260738260336024.

It is an arithmetic number, because the mean of its divisors is an integer number (260738260336024).

Almost surely, 2^{521476520672047} is an apocalyptic number.

521476520672047 is a deficient number, since it is larger than the sum of its proper divisors (1).

521476520672047 is an equidigital number, since it uses as much as digits as its factorization.

521476520672047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39513600, while the sum is 58.

The spelling of 521476520672047 in words is "five hundred twenty-one trillion, four hundred seventy-six billion, five hundred twenty million, six hundred seventy-two thousand, forty-seven".