671311206233671 has 2 divisors, whose sum is σ = 671311206233672. Its totient is φ = 671311206233670.

The previous prime is 671311206233653. The next prime is 671311206233741. The reversal of 671311206233671 is 176332602113176.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671311206233671 is a prime.

It is a super-2 number, since 2×671311206233671² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671311201233671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335655603116835 + 335655603116836.

It is an arithmetic number, because the mean of its divisors is an integer number (335655603116836).

Almost surely, 2^{671311206233671} is an apocalyptic number.

671311206233671 is a deficient number, since it is larger than the sum of its proper divisors (1).

671311206233671 is an equidigital number, since it uses as much as digits as its factorization.

671311206233671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 671311206233671 in words is "six hundred seventy-one trillion, three hundred eleven billion, two hundred six million, two hundred thirty-three thousand, six hundred seventy-one".