172466599903729 has 2 divisors, whose sum is σ = 172466599903730. Its totient is φ = 172466599903728.

The previous prime is 172466599903721. The next prime is 172466599903781. The reversal of 172466599903729 is 927309995664271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90295130640625 + 82171469263104 = 9502375^2 + 9064848^2 .

It is a cyclic number.

It is not a de Polignac number, because 172466599903729 - 2³ = 172466599903721 is a prime.

It is not a weakly prime, because it can be changed into another prime (172466599903721) 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, 86233299951864 + 86233299951865.

It is an arithmetic number, because the mean of its divisors is an integer number (86233299951865).

Almost surely, 2^{172466599903729} is an apocalyptic number.

It is an amenable number.

172466599903729 is a deficient number, since it is larger than the sum of its proper divisors (1).

172466599903729 is an equidigital number, since it uses as much as digits as its factorization.

172466599903729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2777664960, while the sum is 79.

The spelling of 172466599903729 in words is "one hundred seventy-two trillion, four hundred sixty-six billion, five hundred ninety-nine million, nine hundred three thousand, seven hundred twenty-nine".