671039140117 has 2 divisors, whose sum is σ = 671039140118. Its totient is φ = 671039140116.

The previous prime is 671039140087. The next prime is 671039140141. The reversal of 671039140117 is 711041930176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477479618001 + 193559522116 = 690999^2 + 439954^2 .

It is a cyclic number.

It is not a de Polignac number, because 671039140117 - 2¹⁹ = 671038615829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671039140117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671039140817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335519570058 + 335519570059.

It is an arithmetic number, because the mean of its divisors is an integer number (335519570059).

Almost surely, 2^671039140117 is an apocalyptic number.

It is an amenable number.

671039140117 is a deficient number, since it is larger than the sum of its proper divisors (1).

671039140117 is an equidigital number, since it uses as much as digits as its factorization.

671039140117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 671039140117 in words is "six hundred seventy-one billion, thirty-nine million, one hundred forty thousand, one hundred seventeen".