206623203819 has 8 divisors (see below), whose sum is σ = 291703346640. Its totient is φ = 129645931776.

The previous prime is 206623203803. The next prime is 206623203821. The reversal of 206623203819 is 918302326602.

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

It is not a de Polignac number, because 206623203819 - 2⁴ = 206623203803 is a prime.

It is a super-2 number, since 2×206623203819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206623243819) 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, 2025717634 + ... + 2025717735.

It is an arithmetic number, because the mean of its divisors is an integer number (36462918330).

Almost surely, 2^206623203819 is an apocalyptic number.

206623203819 is a deficient number, since it is larger than the sum of its proper divisors (85080142821).

206623203819 is a wasteful number, since it uses less digits than its factorization.

206623203819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051435389.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 206623203819 in words is "two hundred six billion, six hundred twenty-three million, two hundred three thousand, eight hundred nineteen".