5566421542057 has 4 divisors (see below), whose sum is σ = 5716865367556. Its totient is φ = 5415977716560.

The previous prime is 5566421542001. The next prime is 5566421542063. The reversal of 5566421542057 is 7502451246655.

It is a happy number.

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 3098518788121 + 2467902753936 = 1760261^2 + 1570956^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566421542057 - 2⁷ = 5566421541929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5566421541995 and 5566421542013.

It is not an unprimeable number, because it can be changed into a prime (5566421546057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75221912694 + ... + 75221912767.

It is an arithmetic number, because the mean of its divisors is an integer number (1429216341889).

Almost surely, 2^{5566421542057} is an apocalyptic number.

It is an amenable number.

5566421542057 is a deficient number, since it is larger than the sum of its proper divisors (150443825499).

5566421542057 is a wasteful number, since it uses less digits than its factorization.

5566421542057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150443825498.

The product of its (nonzero) digits is 10080000, while the sum is 52.

The spelling of 5566421542057 in words is "five trillion, five hundred sixty-six billion, four hundred twenty-one million, five hundred forty-two thousand, fifty-seven".