563165565166 has 4 divisors (see below), whose sum is σ = 844748347752. Its totient is φ = 281582782582.

The previous prime is 563165565143. The next prime is 563165565181. The reversal of 563165565166 is 661565561365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661565561365 = 5 ⋅132313112273.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140791391290 + ... + 140791391293.

It is an arithmetic number, because the mean of its divisors is an integer number (211187086938).

Almost surely, 2^563165565166 is an apocalyptic number.

563165565166 is a deficient number, since it is larger than the sum of its proper divisors (281582782586).

563165565166 is a wasteful number, since it uses less digits than its factorization.

563165565166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281582782585.

The product of its digits is 14580000, while the sum is 55.

The spelling of 563165565166 in words is "five hundred sixty-three billion, one hundred sixty-five million, five hundred sixty-five thousand, one hundred sixty-six".