216080171029 has 2 divisors, whose sum is σ = 216080171030. Its totient is φ = 216080171028.

The previous prime is 216080171011. The next prime is 216080171063. The reversal of 216080171029 is 920171080612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128687212900 + 87392958129 = 358730^2 + 295623^2 .

It is a cyclic number.

It is not a de Polignac number, because 216080171029 - 2⁹ = 216080170517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216030171029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108040085514 + 108040085515.

It is an arithmetic number, because the mean of its divisors is an integer number (108040085515).

Almost surely, 2^216080171029 is an apocalyptic number.

It is an amenable number.

216080171029 is a deficient number, since it is larger than the sum of its proper divisors (1).

216080171029 is an equidigital number, since it uses as much as digits as its factorization.

216080171029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 216080171029 in words is "two hundred sixteen billion, eighty million, one hundred seventy-one thousand, twenty-nine".