671155501198123 has 2 divisors, whose sum is σ = 671155501198124. Its totient is φ = 671155501198122.

The previous prime is 671155501198097. The next prime is 671155501198129. The reversal of 671155501198123 is 321891105551176.

671155501198123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671155501198123 is a prime.

It is not a weakly prime, because it can be changed into another prime (671155501198129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335577750599061 + 335577750599062.

It is an arithmetic number, because the mean of its divisors is an integer number (335577750599062).

Almost surely, 2^{671155501198123} is an apocalyptic number.

671155501198123 is a deficient number, since it is larger than the sum of its proper divisors (1).

671155501198123 is an equidigital number, since it uses as much as digits as its factorization.

671155501198123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 55.

The spelling of 671155501198123 in words is "six hundred seventy-one trillion, one hundred fifty-five billion, five hundred one million, one hundred ninety-eight thousand, one hundred twenty-three".