208944143136 has 48 divisors (see below), whose sum is σ = 609420420000. Its totient is φ = 69648047424.

The previous prime is 208944143101. The next prime is 208944143189. The reversal of 208944143136 is 631341449802.

208944143136 is a `hidden beast` number, since 20 + 89 + 4 + 414 + 3 + 136 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 208944143091 and 208944143100.

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, 120915886 + ... + 120917613.

It is an arithmetic number, because the mean of its divisors is an integer number (12696258750).

Almost surely, 2^208944143136 is an apocalyptic number.

It is an amenable number.

208944143136 is an abundant number, since it is smaller than the sum of its proper divisors (400476276864).

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

208944143136 is a wasteful number, since it uses less digits than its factorization.

208944143136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241833518 (or 241833504 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 208944143136 in words is "two hundred eight billion, nine hundred forty-four million, one hundred forty-three thousand, one hundred thirty-six".