208671767128 has 32 divisors (see below), whose sum is σ = 427157937360. Its totient is φ = 94777620480.

The previous prime is 208671767119. The next prime is 208671767141. The reversal of 208671767128 is 821767176802.

208671767128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×208671767128² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800001 + ... + 1028272.

Almost surely, 2^208671767128 is an apocalyptic number.

It is an amenable number.

208671767128 is an abundant number, since it is smaller than the sum of its proper divisors (218486170232).

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

208671767128 is a wasteful number, since it uses less digits than its factorization.

208671767128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829587 (or 1829583 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 208671767128 in words is "two hundred eight billion, six hundred seventy-one million, seven hundred sixty-seven thousand, one hundred twenty-eight".