6520511671 has 2 divisors, whose sum is σ = 6520511672. Its totient is φ = 6520511670.

The previous prime is 6520511603. The next prime is 6520511693. The reversal of 6520511671 is 1761150256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6520511671 - 2¹⁷ = 6520380599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520511071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260255835 + 3260255836.

It is an arithmetic number, because the mean of its divisors is an integer number (3260255836).

Almost surely, 2^6520511671 is an apocalyptic number.

6520511671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520511671 is an equidigital number, since it uses as much as digits as its factorization.

6520511671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 6520511671 is about 80749.6852687365. The cubic root of 6520511671 is about 1868.2165950681.

The spelling of 6520511671 in words is "six billion, five hundred twenty million, five hundred eleven thousand, six hundred seventy-one".