6516420311 has 2 divisors, whose sum is σ = 6516420312. Its totient is φ = 6516420310.

The previous prime is 6516420301. The next prime is 6516420341. The reversal of 6516420311 is 1130246156.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6516420311 - 2²⁶ = 6449311447 is a prime.

It is a super-2 number, since 2×6516420311² = 84927467339226673442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6516420301) 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, 3258210155 + 3258210156.

It is an arithmetic number, because the mean of its divisors is an integer number (3258210156).

Almost surely, 2^6516420311 is an apocalyptic number.

6516420311 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516420311 is an equidigital number, since it uses as much as digits as its factorization.

6516420311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6516420311 is about 80724.3476963425. The cubic root of 6516420311 is about 1867.8257696102.

Adding to 6516420311 its reverse (1130246156), we get a palindrome (7646666467).

The spelling of 6516420311 in words is "six billion, five hundred sixteen million, four hundred twenty thousand, three hundred eleven".