208157943984 has 40 divisors (see below), whose sum is σ = 550857003312. Its totient is φ = 67693639680.

The previous prime is 208157943977. The next prime is 208157944003. The reversal of 208157943984 is 489349751802.

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 7 ways as a sum of consecutive naturals, for example, 52883689 + ... + 52887624.

Almost surely, 2^208157943984 is an apocalyptic number.

208157943984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

208157943984 is an abundant number, since it is smaller than the sum of its proper divisors (342699059328).

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

208157943984 is a wasteful number, since it uses less digits than its factorization.

208157943984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105771365 (or 105771359 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 208157943984 in words is "two hundred eight billion, one hundred fifty-seven million, nine hundred forty-three thousand, nine hundred eighty-four".