5566166505716 has 24 divisors (see below), whose sum is σ = 9979683229320. Its totient is φ = 2714846284800.

The previous prime is 5566166505667. The next prime is 5566166505743. The reversal of 5566166505716 is 6175056616655.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 420936249616 + 5145230256100 = 648796^2 + 2268310^2 .

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, 976901 + ... + 3476588.

It is an arithmetic number, because the mean of its divisors is an integer number (415820134555).

Almost surely, 2^{5566166505716} is an apocalyptic number.

It is an amenable number.

5566166505716 is a deficient number, since it is larger than the sum of its proper divisors (4413516723604).

5566166505716 is a wasteful number, since it uses less digits than its factorization.

5566166505716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461155 (or 4461153 counting only the distinct ones).

The product of its (nonzero) digits is 34020000, while the sum is 59.

The spelling of 5566166505716 in words is "five trillion, five hundred sixty-six billion, one hundred sixty-six million, five hundred five thousand, seven hundred sixteen".