1608620755566 has 16 divisors (see below), whose sum is σ = 3509718012288. Its totient is φ = 487460835000.

The previous prime is 1608620755543. The next prime is 1608620755601. The reversal of 1608620755566 is 6655570268061.

It is a congruent number.

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, 12186520810 + ... + 12186520941.

It is an arithmetic number, because the mean of its divisors is an integer number (219357375768).

Almost surely, 2^{1608620755566} is an apocalyptic number.

1608620755566 is an abundant number, since it is smaller than the sum of its proper divisors (1901097256722).

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

1608620755566 is a wasteful number, since it uses less digits than its factorization.

1608620755566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24373041767.

The product of its (nonzero) digits is 18144000, while the sum is 57.

The spelling of 1608620755566 in words is "one trillion, six hundred eight billion, six hundred twenty million, seven hundred fifty-five thousand, five hundred sixty-six".