209089066683 has 16 divisors (see below), whose sum is σ = 319260830976. Its totient is φ = 119236121760.

The previous prime is 209089066657. The next prime is 209089066757. The reversal of 209089066683 is 386660980902.

It is not a de Polignac number, because 209089066683 - 2¹⁴ = 209089050299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (209089066633) 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, 10128816 + ... + 10149437.

It is an arithmetic number, because the mean of its divisors is an integer number (19953801936).

Almost surely, 2^209089066683 is an apocalyptic number.

209089066683 is a deficient number, since it is larger than the sum of its proper divisors (110171764293).

209089066683 is a wasteful number, since it uses less digits than its factorization.

209089066683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20278754.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 209089066683 in words is "two hundred nine billion, eighty-nine million, sixty-six thousand, six hundred eighty-three".