206586555680004 has 12 divisors (see below), whose sum is σ = 482035296586704. Its totient is φ = 68862185226664.

The previous prime is 206586555679981. The next prime is 206586555680033. The reversal of 206586555680004 is 400086555685602.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 206586555680004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8607773153322 + ... + 8607773153345.

It is an arithmetic number, because the mean of its divisors is an integer number (40169608048892).

Almost surely, 2^{206586555680004} is an apocalyptic number.

It is an amenable number.

206586555680004 is an abundant number, since it is smaller than the sum of its proper divisors (275448740906700).

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

206586555680004 is a wasteful number, since it uses less digits than its factorization.

206586555680004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17215546306674 (or 17215546306672 counting only the distinct ones).

The product of its (nonzero) digits is 69120000, while the sum is 60.

The spelling of 206586555680004 in words is "two hundred six trillion, five hundred eighty-six billion, five hundred fifty-five million, six hundred eighty thousand, four".