563054445661 has 4 divisors (see below), whose sum is σ = 563056126524. Its totient is φ = 563052764800.

The previous prime is 563054445641. The next prime is 563054445761. The reversal of 563054445661 is 166544450365.

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 306683364100 + 256371081561 = 553790^2 + 506331^2 .

It is a cyclic number.

It is not a de Polignac number, because 563054445661 - 2¹⁹ = 563053921373 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563054445641) 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, 147550 + ... + 1071391.

It is an arithmetic number, because the mean of its divisors is an integer number (140764031631).

Almost surely, 2^563054445661 is an apocalyptic number.

It is an amenable number.

563054445661 is a deficient number, since it is larger than the sum of its proper divisors (1680863).

563054445661 is a wasteful number, since it uses less digits than its factorization.

563054445661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680862.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 563054445661 in words is "five hundred sixty-three billion, fifty-four million, four hundred forty-five thousand, six hundred sixty-one".