208565728652 has 24 divisors (see below), whose sum is σ = 368403497280. Its totient is φ = 103310802000.

The previous prime is 208565728643. The next prime is 208565728663. The reversal of 208565728652 is 256827565802.

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, 141974 + ... + 661277.

It is an arithmetic number, because the mean of its divisors is an integer number (15350145720).

Almost surely, 2^208565728652 is an apocalyptic number.

It is an amenable number.

208565728652 is a deficient number, since it is larger than the sum of its proper divisors (159837768628).

208565728652 is a wasteful number, since it uses less digits than its factorization.

208565728652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803861 (or 803859 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 208565728652 in words is "two hundred eight billion, five hundred sixty-five million, seven hundred twenty-eight thousand, six hundred fifty-two".