206660246543 has 16 divisors (see below), whose sum is σ = 209002279680. Its totient is φ = 204334664256.

The previous prime is 206660246521. The next prime is 206660246567. The reversal of 206660246543 is 345642066602.

It is a cyclic number.

It is not a de Polignac number, because 206660246543 - 2²⁴ = 206643469327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206660246494 and 206660246503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206660446543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24665771 + ... + 24674147.

It is an arithmetic number, because the mean of its divisors is an integer number (13062642480).

Almost surely, 2^206660246543 is an apocalyptic number.

206660246543 is a deficient number, since it is larger than the sum of its proper divisors (2342033137).

206660246543 is a wasteful number, since it uses less digits than its factorization.

206660246543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9326.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 206660246543 in words is "two hundred six billion, six hundred sixty million, two hundred forty-six thousand, five hundred forty-three".