198052578337813 has 2 divisors, whose sum is σ = 198052578337814. Its totient is φ = 198052578337812.

The previous prime is 198052578337807. The next prime is 198052578337829. The reversal of 198052578337813 is 318733875250891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196694369899729 + 1358208438084 = 14024777^2 + 1165422^2 .

It is a cyclic number.

It is not a de Polignac number, because 198052578337813 - 2²¹ = 198052576240661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198052578337853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99026289168906 + 99026289168907.

It is an arithmetic number, because the mean of its divisors is an integer number (99026289168907).

Almost surely, 2^{198052578337813} is an apocalyptic number.

It is an amenable number.

198052578337813 is a deficient number, since it is larger than the sum of its proper divisors (1).

198052578337813 is an equidigital number, since it uses as much as digits as its factorization.

198052578337813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 304819200, while the sum is 70.

The spelling of 198052578337813 in words is "one hundred ninety-eight trillion, fifty-two billion, five hundred seventy-eight million, three hundred thirty-seven thousand, eight hundred thirteen".