520205627261 has 2 divisors, whose sum is σ = 520205627262. Its totient is φ = 520205627260.

The previous prime is 520205627209. The next prime is 520205627299. The reversal of 520205627261 is 162726502025.

It is a happy number.

It is an a-pointer prime, because the next prime (520205627299) can be obtained adding 520205627261 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490791319225 + 29414308036 = 700565^2 + 171506^2 .

It is a cyclic number.

It is not a de Polignac number, because 520205627261 - 2⁶ = 520205627197 is a prime.

It is a super-2 number, since 2×520205627261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520205620261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260102813630 + 260102813631.

It is an arithmetic number, because the mean of its divisors is an integer number (260102813631).

Almost surely, 2^520205627261 is an apocalyptic number.

It is an amenable number.

520205627261 is a deficient number, since it is larger than the sum of its proper divisors (1).

520205627261 is an equidigital number, since it uses as much as digits as its factorization.

520205627261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 520205627261 in words is "five hundred twenty billion, two hundred five million, six hundred twenty-seven thousand, two hundred sixty-one".