208591242120 has 160 divisors (see below), whose sum is σ = 731581139520. Its totient is φ = 53205863040.

The previous prime is 208591242073. The next prime is 208591242191. The reversal of 208591242120 is 21242195802.

208591242120 is a `hidden beast` number, since 2 + 0 + 8 + 591 + 2 + 42 + 1 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1325046 + ... + 1474085.

It is an arithmetic number, because the mean of its divisors is an integer number (4572382122).

Almost surely, 2^208591242120 is an apocalyptic number.

208591242120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208591242120 is an abundant number, since it is smaller than the sum of its proper divisors (522989897400).

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

208591242120 is a wasteful number, since it uses less digits than its factorization.

208591242120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799177 (or 2799164 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 208591242120 in words is "two hundred eight billion, five hundred ninety-one million, two hundred forty-two thousand, one hundred twenty".