561566051057 has 64 divisors (see below), whose sum is σ = 678082814208. Its totient is φ = 459303936000.

The previous prime is 561566051051. The next prime is 561566051077. The reversal of 561566051057 is 750150665165.

It is not a de Polignac number, because 561566051057 - 2⁴ = 561566051041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561566051051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64684757 + ... + 64693437.

It is an arithmetic number, because the mean of its divisors is an integer number (10595043972).

Almost surely, 2^561566051057 is an apocalyptic number.

It is an amenable number.

561566051057 is a deficient number, since it is larger than the sum of its proper divisors (116516763151).

561566051057 is a wasteful number, since it uses less digits than its factorization.

561566051057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8930.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 561566051057 in words is "five hundred sixty-one billion, five hundred sixty-six million, fifty-one thousand, fifty-seven".