180720013829 has 2 divisors, whose sum is σ = 180720013830. Its totient is φ = 180720013828.

The previous prime is 180720013801. The next prime is 180720013889. The reversal of 180720013829 is 928310027081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167170588225 + 13549425604 = 408865^2 + 116402^2 .

It is a cyclic number.

It is not a de Polignac number, because 180720013829 - 2¹² = 180720009733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180720013889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90360006914 + 90360006915.

It is an arithmetic number, because the mean of its divisors is an integer number (90360006915).

Almost surely, 2^180720013829 is an apocalyptic number.

It is an amenable number.

180720013829 is a deficient number, since it is larger than the sum of its proper divisors (1).

180720013829 is an equidigital number, since it uses as much as digits as its factorization.

180720013829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 180720013829 in words is "one hundred eighty billion, seven hundred twenty million, thirteen thousand, eight hundred twenty-nine".