206791456812 has 12 divisors (see below), whose sum is σ = 482513399256. Its totient is φ = 68930485600.

The previous prime is 206791456801. The next prime is 206791456843. The reversal of 206791456812 is 218654197602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×206791456812² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8616310689 + ... + 8616310712.

It is an arithmetic number, because the mean of its divisors is an integer number (40209449938).

Almost surely, 2^206791456812 is an apocalyptic number.

It is an amenable number.

206791456812 is an abundant number, since it is smaller than the sum of its proper divisors (275721942444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206791456812 is a wasteful number, since it uses less digits than its factorization.

206791456812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17232621408 (or 17232621406 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 206791456812 in words is "two hundred six billion, seven hundred ninety-one million, four hundred fifty-six thousand, eight hundred twelve".