198481070365531 has 2 divisors, whose sum is σ = 198481070365532. Its totient is φ = 198481070365530.

The previous prime is 198481070365489. The next prime is 198481070365549. The reversal of 198481070365531 is 135563070184891.

It is a strong prime.

It is an emirp because it is prime and its reverse (135563070184891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198481070365531 is a prime.

It is a super-2 number, since 2×198481070365531² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198481070365531.

It is not a weakly prime, because it can be changed into another prime (198481070368531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99240535182765 + 99240535182766.

It is an arithmetic number, because the mean of its divisors is an integer number (99240535182766).

Almost surely, 2^{198481070365531} is an apocalyptic number.

198481070365531 is a deficient number, since it is larger than the sum of its proper divisors (1).

198481070365531 is an equidigital number, since it uses as much as digits as its factorization.

198481070365531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 198481070365531 in words is "one hundred ninety-eight trillion, four hundred eighty-one billion, seventy million, three hundred sixty-five thousand, five hundred thirty-one".