521461324040543 has 2 divisors, whose sum is σ = 521461324040544. Its totient is φ = 521461324040542.

The previous prime is 521461324040519. The next prime is 521461324040557. The reversal of 521461324040543 is 345040423164125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521461324040543 - 2²⁰ = 521461322991967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521461324040494 and 521461324040503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521461324040513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260730662020271 + 260730662020272.

It is an arithmetic number, because the mean of its divisors is an integer number (260730662020272).

Almost surely, 2^{521461324040543} is an apocalyptic number.

521461324040543 is a deficient number, since it is larger than the sum of its proper divisors (1).

521461324040543 is an equidigital number, since it uses as much as digits as its factorization.

521461324040543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 521461324040543 in words is "five hundred twenty-one trillion, four hundred sixty-one billion, three hundred twenty-four million, forty thousand, five hundred forty-three".