566612321105521 has 8 divisors (see below), whose sum is σ = 567381216037760. Its totient is φ = 565843432030128.

The previous prime is 566612321105513. The next prime is 566612321105581. The reversal of 566612321105521 is 125501123216665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 566612321105521 - 2³ = 566612321105513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566612321105581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213558355 + ... + 216195271.

It is an arithmetic number, because the mean of its divisors is an integer number (70922652004720).

Almost surely, 2^{566612321105521} is an apocalyptic number.

It is an amenable number.

566612321105521 is a deficient number, since it is larger than the sum of its proper divisors (768894932239).

566612321105521 is a wasteful number, since it uses less digits than its factorization.

566612321105521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928423.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 566612321105521 in words is "five hundred sixty-six trillion, six hundred twelve billion, three hundred twenty-one million, one hundred five thousand, five hundred twenty-one".