209466830673 has 12 divisors (see below), whose sum is σ = 302567536128. Its totient is φ = 139642552440.

The previous prime is 209466830591. The next prime is 209466830689. The reversal of 209466830673 is 376038664902.

209466830673 is a `hidden beast` number, since 209 + 4 + 6 + 68 + 306 + 73 = 666.

It is not a de Polignac number, because 209466830673 - 2²⁴ = 209450053457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (209466830693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 777436 + ... + 1011602.

It is an arithmetic number, because the mean of its divisors is an integer number (25213961344).

Almost surely, 2^209466830673 is an apocalyptic number.

It is an amenable number.

209466830673 is a deficient number, since it is larger than the sum of its proper divisors (93100705455).

209466830673 is a wasteful number, since it uses less digits than its factorization.

209466830673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333564 (or 333561 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 209466830673 in words is "two hundred nine billion, four hundred sixty-six million, eight hundred thirty thousand, six hundred seventy-three".