520711257107 has 2 divisors, whose sum is σ = 520711257108. Its totient is φ = 520711257106.

The previous prime is 520711256981. The next prime is 520711257113. The reversal of 520711257107 is 701752117025.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520711257107 - 2¹² = 520711253011 is a prime.

It is a super-2 number, since 2×520711257107² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (520711257307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260355628553 + 260355628554.

It is an arithmetic number, because the mean of its divisors is an integer number (260355628554).

Almost surely, 2^520711257107 is an apocalyptic number.

520711257107 is a deficient number, since it is larger than the sum of its proper divisors (1).

520711257107 is an equidigital number, since it uses as much as digits as its factorization.

520711257107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34300, while the sum is 38.

The spelling of 520711257107 in words is "five hundred twenty billion, seven hundred eleven million, two hundred fifty-seven thousand, one hundred seven".