209674449016 has 24 divisors (see below), whose sum is σ = 410244770520. Its totient is φ = 100276113696.

The previous prime is 209674449007. The next prime is 209674449029. The reversal of 209674449016 is 610944476902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6194410 + ... + 6228166.

It is an arithmetic number, because the mean of its divisors is an integer number (17093532105).

Almost surely, 2^209674449016 is an apocalyptic number.

It is an amenable number.

209674449016 is a deficient number, since it is larger than the sum of its proper divisors (200570321504).

209674449016 is an frugal number, since it uses more digits than its factorization.

209674449016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67543 (or 33782 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 209674449016 in words is "two hundred nine billion, six hundred seventy-four million, four hundred forty-nine thousand, sixteen".