206488680867 has 32 divisors (see below), whose sum is σ = 352704399360. Its totient is φ = 116949329280.

The previous prime is 206488680857. The next prime is 206488680911. The reversal of 206488680867 is 768086884602.

206488680867 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 206488680867 - 2²⁰ = 206487632291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (206488680857) 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 31 ways as a sum of consecutive naturals, for example, 4812859 + ... + 4855572.

It is an arithmetic number, because the mean of its divisors is an integer number (11022012480).

Almost surely, 2^206488680867 is an apocalyptic number.

206488680867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

206488680867 is a deficient number, since it is larger than the sum of its proper divisors (146215718493).

206488680867 is a wasteful number, since it uses less digits than its factorization.

206488680867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9668560 (or 9668554 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 63.

The spelling of 206488680867 in words is "two hundred six billion, four hundred eighty-eight million, six hundred eighty thousand, eight hundred sixty-seven".