180728714897 has 2 divisors, whose sum is σ = 180728714898. Its totient is φ = 180728714896.

The previous prime is 180728714797. The next prime is 180728714923. The reversal of 180728714897 is 798417827081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176661336721 + 4067378176 = 420311^2 + 63776^2 .

It is a cyclic number.

It is not a de Polignac number, because 180728714897 - 2¹⁰ = 180728713873 is a prime.

It is a super-2 number, since 2×180728714897² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180728714597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90364357448 + 90364357449.

It is an arithmetic number, because the mean of its divisors is an integer number (90364357449).

Almost surely, 2^180728714897 is an apocalyptic number.

It is an amenable number.

180728714897 is a deficient number, since it is larger than the sum of its proper divisors (1).

180728714897 is an equidigital number, since it uses as much as digits as its factorization.

180728714897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12644352, while the sum is 62.

The spelling of 180728714897 in words is "one hundred eighty billion, seven hundred twenty-eight million, seven hundred fourteen thousand, eight hundred ninety-seven".