5666566513 has 4 divisors (see below), whose sum is σ = 5759461108. Its totient is φ = 5573671920.

The previous prime is 5666566487. The next prime is 5666566553. The reversal of 5666566513 is 3156656665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1754939664 + 3911626849 = 41892^2 + 62543^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666566513 - 2⁹ = 5666566001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5666566553) 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, 46447206 + ... + 46447327.

It is an arithmetic number, because the mean of its divisors is an integer number (1439865277).

Almost surely, 2^5666566513 is an apocalyptic number.

It is an amenable number.

5666566513 is a deficient number, since it is larger than the sum of its proper divisors (92894595).

5666566513 is an equidigital number, since it uses as much as digits as its factorization.

5666566513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92894594.

The product of its digits is 2916000, while the sum is 49.

The square root of 5666566513 is about 75276.6000361334. The cubic root of 5666566513 is about 1782.8165770178.

The spelling of 5666566513 in words is "five billion, six hundred sixty-six million, five hundred sixty-six thousand, five hundred thirteen".