209537398796 has 12 divisors (see below), whose sum is σ = 400025943240. Its totient is φ = 95244272160.

The previous prime is 209537398789. The next prime is 209537398841. The reversal of 209537398796 is 697893735902.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2381106761 + ... + 2381106848.

It is an arithmetic number, because the mean of its divisors is an integer number (33335495270).

Almost surely, 2^209537398796 is an apocalyptic number.

It is an amenable number.

209537398796 is a deficient number, since it is larger than the sum of its proper divisors (190488544444).

209537398796 is a wasteful number, since it uses less digits than its factorization.

209537398796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762213624 (or 4762213622 counting only the distinct ones).

The product of its (nonzero) digits is 154314720, while the sum is 68.

The spelling of 209537398796 in words is "two hundred nine billion, five hundred thirty-seven million, three hundred ninety-eight thousand, seven hundred ninety-six".