206459497680 has 160 divisors (see below), whose sum is σ = 660589862400. Its totient is φ = 53314669056.

The previous prime is 206459497637. The next prime is 206459497697. The reversal of 206459497680 is 86794954602.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 839911 + ... + 1057529.

It is an arithmetic number, because the mean of its divisors is an integer number (4128686640).

Almost surely, 2^206459497680 is an apocalyptic number.

206459497680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206459497680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330294931200).

206459497680 is an abundant number, since it is smaller than the sum of its proper divisors (454130364720).

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

206459497680 is a wasteful number, since it uses less digits than its factorization.

206459497680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217761 (or 217755 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 206459497680 in words is "two hundred six billion, four hundred fifty-nine million, four hundred ninety-seven thousand, six hundred eighty".