180317135455361 has 2 divisors, whose sum is σ = 180317135455362. Its totient is φ = 180317135455360.

The previous prime is 180317135455357. The next prime is 180317135455399. The reversal of 180317135455361 is 163554531713081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118143421584400 + 62173713870961 = 10869380^2 + 7885031^2 .

It is an emirp because it is prime and its reverse (163554531713081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180317135455361 - 2² = 180317135455357 is a prime.

It is not a weakly prime, because it can be changed into another prime (180317135452361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90158567727680 + 90158567727681.

It is an arithmetic number, because the mean of its divisors is an integer number (90158567727681).

Almost surely, 2^{180317135455361} is an apocalyptic number.

It is an amenable number.

180317135455361 is a deficient number, since it is larger than the sum of its proper divisors (1).

180317135455361 is an equidigital number, since it uses as much as digits as its factorization.

180317135455361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 180317135455361 in words is "one hundred eighty trillion, three hundred seventeen billion, one hundred thirty-five million, four hundred fifty-five thousand, three hundred sixty-one".