671928129167 has 2 divisors, whose sum is σ = 671928129168. Its totient is φ = 671928129166.

The previous prime is 671928129101. The next prime is 671928129193. The reversal of 671928129167 is 761921829176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671928129167 is a prime.

It is a super-2 number, since 2×671928129167² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671928329167) 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, 335964064583 + 335964064584.

It is an arithmetic number, because the mean of its divisors is an integer number (335964064584).

Almost surely, 2^671928129167 is an apocalyptic number.

671928129167 is a deficient number, since it is larger than the sum of its proper divisors (1).

671928129167 is an equidigital number, since it uses as much as digits as its factorization.

671928129167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 59.

The spelling of 671928129167 in words is "six hundred seventy-one billion, nine hundred twenty-eight million, one hundred twenty-nine thousand, one hundred sixty-seven".