206623435355 has 8 divisors (see below), whose sum is σ = 248050977264. Its totient is φ = 165230178400.

The previous prime is 206623435351. The next prime is 206623435367. The reversal of 206623435355 is 553534326602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206623435355 - 2² = 206623435351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206623435351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8557976 + ... + 8582085.

It is an arithmetic number, because the mean of its divisors is an integer number (31006372158).

Almost surely, 2^206623435355 is an apocalyptic number.

206623435355 is a deficient number, since it is larger than the sum of its proper divisors (41427541909).

206623435355 is a wasteful number, since it uses less digits than its factorization.

206623435355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17142477.

The product of its (nonzero) digits is 1944000, while the sum is 44.

The spelling of 206623435355 in words is "two hundred six billion, six hundred twenty-three million, four hundred thirty-five thousand, three hundred fifty-five".