209605334398 has 16 divisors (see below), whose sum is σ = 315789422256. Its totient is φ = 104342405760.

The previous prime is 209605334381. The next prime is 209605334429. The reversal of 209605334398 is 893433506902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013640 + ... + 2115172.

It is an arithmetic number, because the mean of its divisors is an integer number (19736838891).

Almost surely, 2^209605334398 is an apocalyptic number.

209605334398 is a deficient number, since it is larger than the sum of its proper divisors (106184087858).

209605334398 is a wasteful number, since it uses less digits than its factorization.

209605334398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106059.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 209605334398 in words is "two hundred nine billion, six hundred five million, three hundred thirty-four thousand, three hundred ninety-eight".