206821652675 has 24 divisors (see below), whose sum is σ = 279811443600. Its totient is φ = 150395235200.

The previous prime is 206821652659. The next prime is 206821652677. The reversal of 206821652675 is 576256128602.

206821652675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206821652675 - 2⁴ = 206821652659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206821652677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2138669 + ... + 2233281.

It is an arithmetic number, because the mean of its divisors is an integer number (11658810150).

Almost surely, 2^206821652675 is an apocalyptic number.

206821652675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206821652675 is a deficient number, since it is larger than the sum of its proper divisors (72989790925).

206821652675 is a wasteful number, since it uses less digits than its factorization.

206821652675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102583 (or 102578 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 206821652675 in words is "two hundred six billion, eight hundred twenty-one million, six hundred fifty-two thousand, six hundred seventy-five".