566641417647 has 4 divisors (see below), whose sum is σ = 755521890200. Its totient is φ = 377760945096.

The previous prime is 566641417577. The next prime is 566641417669. The reversal of 566641417647 is 746714146665.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 566641417647 - 2³⁹ = 16885603759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566641417697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94440236272 + ... + 94440236277.

It is an arithmetic number, because the mean of its divisors is an integer number (188880472550).

Almost surely, 2^566641417647 is an apocalyptic number.

566641417647 is a deficient number, since it is larger than the sum of its proper divisors (188880472553).

566641417647 is a wasteful number, since it uses less digits than its factorization.

566641417647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188880472552.

The product of its digits is 20321280, while the sum is 57.

The spelling of 566641417647 in words is "five hundred sixty-six billion, six hundred forty-one million, four hundred seventeen thousand, six hundred forty-seven".