206666230534 has 4 divisors (see below), whose sum is σ = 309999345804. Its totient is φ = 103333115266.

The previous prime is 206666230493. The next prime is 206666230543. The reversal of 206666230534 is 435032666602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 435032666602 = 2 ⋅217516333301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51666557632 + ... + 51666557635.

It is an arithmetic number, because the mean of its divisors is an integer number (77499836451).

Almost surely, 2^206666230534 is an apocalyptic number.

206666230534 is a deficient number, since it is larger than the sum of its proper divisors (103333115270).

206666230534 is a wasteful number, since it uses less digits than its factorization.

206666230534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103333115269.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 206666230534 in words is "two hundred six billion, six hundred sixty-six million, two hundred thirty thousand, five hundred thirty-four".