206809934481 has 16 divisors (see below), whose sum is σ = 309827620800. Its totient is φ = 136324149984.

The previous prime is 206809934459. The next prime is 206809934489. The reversal of 206809934481 is 184439908602.

206809934481 is a `hidden beast` number, since 206 + 8 + 0 + 99 + 344 + 8 + 1 = 666.

It is not a de Polignac number, because 206809934481 - 2¹⁵ = 206809901713 is a prime.

It is a super-2 number, since 2×206809934481² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (206809934489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43029211 + ... + 43034016.

It is an arithmetic number, because the mean of its divisors is an integer number (19364226300).

Almost surely, 2^206809934481 is an apocalyptic number.

It is an amenable number.

206809934481 is a deficient number, since it is larger than the sum of its proper divisors (103017686319).

206809934481 is an equidigital number, since it uses as much as digits as its factorization.

206809934481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86063325 (or 86063319 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 206809934481 in words is "two hundred six billion, eight hundred nine million, nine hundred thirty-four thousand, four hundred eighty-one".