520988716663 has 2 divisors, whose sum is σ = 520988716664. Its totient is φ = 520988716662.

The previous prime is 520988716637. The next prime is 520988716697. The reversal of 520988716663 is 366617889025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520988716663 - 2⁹ = 520988716151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520988716603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260494358331 + 260494358332.

It is an arithmetic number, because the mean of its divisors is an integer number (260494358332).

Almost surely, 2^520988716663 is an apocalyptic number.

520988716663 is a deficient number, since it is larger than the sum of its proper divisors (1).

520988716663 is an equidigital number, since it uses as much as digits as its factorization.

520988716663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 520988716663 in words is "five hundred twenty billion, nine hundred eighty-eight million, seven hundred sixteen thousand, six hundred sixty-three".