118998016321871 has 2 divisors, whose sum is σ = 118998016321872. Its totient is φ = 118998016321870.

The previous prime is 118998016321787. The next prime is 118998016321957. The reversal of 118998016321871 is 178123610899811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118998016321871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118998016321798 and 118998016321807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118998016327871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59499008160935 + 59499008160936.

It is an arithmetic number, because the mean of its divisors is an integer number (59499008160936).

Almost surely, 2^{118998016321871} is an apocalyptic number.

118998016321871 is a deficient number, since it is larger than the sum of its proper divisors (1).

118998016321871 is an equidigital number, since it uses as much as digits as its factorization.

118998016321871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 65.

The spelling of 118998016321871 in words is "one hundred eighteen trillion, nine hundred ninety-eight billion, sixteen million, three hundred twenty-one thousand, eight hundred seventy-one".