206164646344544 has 12 divisors (see below), whose sum is σ = 405886647490884. Its totient is φ = 103082323172256.

The previous prime is 206164646344529. The next prime is 206164646344561. The reversal of 206164646344544 is 445443646461602.

It is a super-2 number, since 2×206164646344544² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221322599102 + ... + 3221322599165.

It is an arithmetic number, because the mean of its divisors is an integer number (33823887290907).

Almost surely, 2^{206164646344544} is an apocalyptic number.

It is an amenable number.

206164646344544 is a deficient number, since it is larger than the sum of its proper divisors (199722001146340).

206164646344544 is an equidigital number, since it uses as much as digits as its factorization.

206164646344544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442645198277 (or 6442645198269 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 59.

The spelling of 206164646344544 in words is "two hundred six trillion, one hundred sixty-four billion, six hundred forty-six million, three hundred forty-four thousand, five hundred forty-four".