208421084088 has 72 divisors (see below), whose sum is σ = 656632763280. Its totient is φ = 59548880160.

The previous prime is 208421084077. The next prime is 208421084129. The reversal of 208421084088 is 880480124802.

208421084088 is a `hidden beast` number, since 20 + 8 + 4 + 210 + 8 + 408 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29534608 + ... + 29541663.

It is an arithmetic number, because the mean of its divisors is an integer number (9119899490).

Almost surely, 2^208421084088 is an apocalyptic number.

208421084088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

208421084088 is an abundant number, since it is smaller than the sum of its proper divisors (448211679192).

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

208421084088 is a wasteful number, since it uses less digits than its factorization.

208421084088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59076297 (or 59076283 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 45.

The spelling of 208421084088 in words is "two hundred eight billion, four hundred twenty-one million, eighty-four thousand, eighty-eight".