206220456164 has 12 divisors (see below), whose sum is σ = 360913265664. Its totient is φ = 103102380264.

The previous prime is 206220456163. The next prime is 206220456179. The reversal of 206220456164 is 461654022602.

It is not an unprimeable number, because it can be changed into a prime (206220456163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1902632 + ... + 2008095.

It is an arithmetic number, because the mean of its divisors is an integer number (30076105472).

Almost surely, 2^206220456164 is an apocalyptic number.

It is an amenable number.

206220456164 is a deficient number, since it is larger than the sum of its proper divisors (154692809500).

206220456164 is a wasteful number, since it uses less digits than its factorization.

206220456164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923914 (or 3923912 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 206220456164 its reverse (461654022602), we get a palindrome (667874478766).

The spelling of 206220456164 in words is "two hundred six billion, two hundred twenty million, four hundred fifty-six thousand, one hundred sixty-four".