180099706321 has 2 divisors, whose sum is σ = 180099706322. Its totient is φ = 180099706320.

The previous prime is 180099706301. The next prime is 180099706349. The reversal of 180099706321 is 123607990081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137700366400 + 42399339921 = 371080^2 + 205911^2 .

It is an emirp because it is prime and its reverse (123607990081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180099706321 - 2⁹ = 180099705809 is a prime.

It is not a weakly prime, because it can be changed into another prime (180099706301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90049853160 + 90049853161.

It is an arithmetic number, because the mean of its divisors is an integer number (90049853161).

Almost surely, 2^180099706321 is an apocalyptic number.

It is an amenable number.

180099706321 is a deficient number, since it is larger than the sum of its proper divisors (1).

180099706321 is an equidigital number, since it uses as much as digits as its factorization.

180099706321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 180099706321 in words is "one hundred eighty billion, ninety-nine million, seven hundred six thousand, three hundred twenty-one".