6479771567 has 2 divisors, whose sum is σ = 6479771568. Its totient is φ = 6479771566.

The previous prime is 6479771563. The next prime is 6479771587. The reversal of 6479771567 is 7651779746.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6479771567 - 2² = 6479771563 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6479771563) 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, 3239885783 + 3239885784.

It is an arithmetic number, because the mean of its divisors is an integer number (3239885784).

Almost surely, 2^6479771567 is an apocalyptic number.

6479771567 is a deficient number, since it is larger than the sum of its proper divisors (1).

6479771567 is an equidigital number, since it uses as much as digits as its factorization.

6479771567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15558480, while the sum is 59.

The square root of 6479771567 is about 80497.0283116091. The cubic root of 6479771567 is about 1864.3175960790.

The spelling of 6479771567 in words is "six billion, four hundred seventy-nine million, seven hundred seventy-one thousand, five hundred sixty-seven".