5657663667566 has 16 divisors (see below), whose sum is σ = 8491633273728. Its totient is φ = 2827119516000.

The previous prime is 5657663667547. The next prime is 5657663667577. The reversal of 5657663667566 is 6657663667565.

It is a junction number, because it is equal to n+sod(n) for n = 5657663667493 and 5657663667502.

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, 46032956 + ... + 46155696.

It is an arithmetic number, because the mean of its divisors is an integer number (530727079608).

Almost surely, 2^{5657663667566} is an apocalyptic number.

5657663667566 is a deficient number, since it is larger than the sum of its proper divisors (2833969606162).

5657663667566 is a wasteful number, since it uses less digits than its factorization.

5657663667566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136507.

The product of its digits is 5143824000, while the sum is 74.

Subtracting 5657663667566 from its reverse (6657663667565), we obtain a palindrome (999999999999).

The spelling of 5657663667566 in words is "five trillion, six hundred fifty-seven billion, six hundred sixty-three million, six hundred sixty-seven thousand, five hundred sixty-six".