206806502580 has 24 divisors (see below), whose sum is σ = 579058207392. Its totient is φ = 55148400672.

The previous prime is 206806502563. The next prime is 206806502629. The reversal of 206806502580 is 85205608602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723387462 + ... + 1723387581.

It is an arithmetic number, because the mean of its divisors is an integer number (24127425308).

Almost surely, 2^206806502580 is an apocalyptic number.

206806502580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206806502580 is an abundant number, since it is smaller than the sum of its proper divisors (372251704812).

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

206806502580 is a wasteful number, since it uses less digits than its factorization.

206806502580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446775055 (or 3446775053 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 206806502580 in words is "two hundred six billion, eight hundred six million, five hundred two thousand, five hundred eighty".