671731053139 has 2 divisors, whose sum is σ = 671731053140. Its totient is φ = 671731053138.

The previous prime is 671731053121. The next prime is 671731053151. The reversal of 671731053139 is 931350137176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671731053139 - 2¹³ = 671731044947 is a prime.

It is not a weakly prime, because it can be changed into another prime (671731053199) 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, 335865526569 + 335865526570.

It is an arithmetic number, because the mean of its divisors is an integer number (335865526570).

Almost surely, 2^671731053139 is an apocalyptic number.

671731053139 is a deficient number, since it is larger than the sum of its proper divisors (1).

671731053139 is an equidigital number, since it uses as much as digits as its factorization.

671731053139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357210, while the sum is 46.

The spelling of 671731053139 in words is "six hundred seventy-one billion, seven hundred thirty-one million, fifty-three thousand, one hundred thirty-nine".