521885016287 has 2 divisors, whose sum is σ = 521885016288. Its totient is φ = 521885016286.

The previous prime is 521885016281. The next prime is 521885016329. The reversal of 521885016287 is 782610588125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521885016287 - 2⁴ = 521885016271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521885016281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260942508143 + 260942508144.

It is an arithmetic number, because the mean of its divisors is an integer number (260942508144).

Almost surely, 2^521885016287 is an apocalyptic number.

521885016287 is a deficient number, since it is larger than the sum of its proper divisors (1).

521885016287 is an equidigital number, since it uses as much as digits as its factorization.

521885016287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 521885016287 in words is "five hundred twenty-one billion, eight hundred eighty-five million, sixteen thousand, two hundred eighty-seven".