671784752011 has 2 divisors, whose sum is σ = 671784752012. Its totient is φ = 671784752010.

The previous prime is 671784752003. The next prime is 671784752069. The reversal of 671784752011 is 110257487176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671784752011 - 2³ = 671784752003 is a prime.

It is not a weakly prime, because it can be changed into another prime (671784752711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335892376005 + 335892376006.

It is an arithmetic number, because the mean of its divisors is an integer number (335892376006).

Almost surely, 2^671784752011 is an apocalyptic number.

671784752011 is a deficient number, since it is larger than the sum of its proper divisors (1).

671784752011 is an equidigital number, since it uses as much as digits as its factorization.

671784752011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 658560, while the sum is 49.

The spelling of 671784752011 in words is "six hundred seventy-one billion, seven hundred eighty-four million, seven hundred fifty-two thousand, eleven".