198481070365549 has 2 divisors, whose sum is σ = 198481070365550. Its totient is φ = 198481070365548.

The previous prime is 198481070365531. The next prime is 198481070365619. The reversal of 198481070365549 is 945563070184891.

It is an a-pointer prime, because the next prime (198481070365619) can be obtained adding 198481070365549 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196808492034025 + 1672578331524 = 14028845^2 + 1293282^2 .

It is a cyclic number.

It is not a de Polignac number, because 198481070365549 - 2⁷ = 198481070365421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198481070363549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99240535182774 + 99240535182775.

It is an arithmetic number, because the mean of its divisors is an integer number (99240535182775).

Almost surely, 2^{198481070365549} is an apocalyptic number.

It is an amenable number.

198481070365549 is a deficient number, since it is larger than the sum of its proper divisors (1).

198481070365549 is an equidigital number, since it uses as much as digits as its factorization.

198481070365549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 261273600, while the sum is 70.

The spelling of 198481070365549 in words is "one hundred ninety-eight trillion, four hundred eighty-one billion, seventy million, three hundred sixty-five thousand, five hundred forty-nine".