520266227073389 has 2 divisors, whose sum is σ = 520266227073390. Its totient is φ = 520266227073388.

The previous prime is 520266227073323. The next prime is 520266227073427. The reversal of 520266227073389 is 983370722662025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320741844477289 + 199524382596100 = 17909267^2 + 14125310^2 .

It is a cyclic number.

It is not a de Polignac number, because 520266227073389 - 2¹⁶ = 520266227007853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520266227043389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260133113536694 + 260133113536695.

It is an arithmetic number, because the mean of its divisors is an integer number (260133113536695).

Almost surely, 2^{520266227073389} is an apocalyptic number.

It is an amenable number.

520266227073389 is a deficient number, since it is larger than the sum of its proper divisors (1).

520266227073389 is an equidigital number, since it uses as much as digits as its factorization.

520266227073389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 520266227073389 in words is "five hundred twenty trillion, two hundred sixty-six billion, two hundred twenty-seven million, seventy-three thousand, three hundred eighty-nine".