521110071107 has 2 divisors, whose sum is σ = 521110071108. Its totient is φ = 521110071106.

The previous prime is 521110071091. The next prime is 521110071127. The reversal of 521110071107 is 701170011125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521110071107 - 2⁴ = 521110071091 is a prime.

It is not a weakly prime, because it can be changed into another prime (521110071127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260555035553 + 260555035554.

It is an arithmetic number, because the mean of its divisors is an integer number (260555035554).

Almost surely, 2^521110071107 is an apocalyptic number.

521110071107 is a deficient number, since it is larger than the sum of its proper divisors (1).

521110071107 is an equidigital number, since it uses as much as digits as its factorization.

521110071107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490, while the sum is 26.

The spelling of 521110071107 in words is "five hundred twenty-one billion, one hundred ten million, seventy-one thousand, one hundred seven".