16366658288229 has 6 divisors (see below), whose sum is σ = 23640728638566. Its totient is φ = 10911105525480.

The previous prime is 16366658288209. The next prime is 16366658288311. The reversal of 16366658288229 is 92288285666361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15349172511204 + 1017485777025 = 3917802^2 + 1008705^2 .

It is not a de Polignac number, because 16366658288229 - 2³¹ = 16364510804581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16366658288209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 909258793782 + ... + 909258793799.

It is an arithmetic number, because the mean of its divisors is an integer number (3940121439761).

Almost surely, 2^{16366658288229} is an apocalyptic number.

It is an amenable number.

16366658288229 is a deficient number, since it is larger than the sum of its proper divisors (7274070350337).

16366658288229 is a wasteful number, since it uses less digits than its factorization.

16366658288229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818517587587 (or 1818517587584 counting only the distinct ones).

The product of its digits is 716636160, while the sum is 72.

The spelling of 16366658288229 in words is "sixteen trillion, three hundred sixty-six billion, six hundred fifty-eight million, two hundred eighty-eight thousand, two hundred twenty-nine".