208396671672 has 128 divisors (see below), whose sum is σ = 597373862400. Its totient is φ = 59346805248.

The previous prime is 208396671647. The next prime is 208396671673. The reversal of 208396671672 is 276176693802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208396671673) 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 31 ways as a sum of consecutive naturals, for example, 82076979 + ... + 82079517.

It is an arithmetic number, because the mean of its divisors is an integer number (4666983300).

Almost surely, 2^208396671672 is an apocalyptic number.

It is an amenable number.

208396671672 is an abundant number, since it is smaller than the sum of its proper divisors (388977190728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208396671672 is a wasteful number, since it uses less digits than its factorization.

208396671672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965 (or 3961 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 208396671672 in words is "two hundred eight billion, three hundred ninety-six million, six hundred seventy-one thousand, six hundred seventy-two".