180104325781 has 2 divisors, whose sum is σ = 180104325782. Its totient is φ = 180104325780.

The previous prime is 180104325767. The next prime is 180104325811. The reversal of 180104325781 is 187523401081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165832200625 + 14272125156 = 407225^2 + 119466^2 .

It is an emirp because it is prime and its reverse (187523401081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180104325781 - 2⁵ = 180104325749 is a prime.

It is a super-2 number, since 2×180104325781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180104325721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90052162890 + 90052162891.

It is an arithmetic number, because the mean of its divisors is an integer number (90052162891).

Almost surely, 2^180104325781 is an apocalyptic number.

It is an amenable number.

180104325781 is a deficient number, since it is larger than the sum of its proper divisors (1).

180104325781 is an equidigital number, since it uses as much as digits as its factorization.

180104325781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 180104325781 in words is "one hundred eighty billion, one hundred four million, three hundred twenty-five thousand, seven hundred eighty-one".