56010561109 has 2 divisors, whose sum is σ = 56010561110. Its totient is φ = 56010561108.

The previous prime is 56010561097. The next prime is 56010561133. The reversal of 56010561109 is 90116501065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41159482884 + 14851078225 = 202878^2 + 121865^2 .

It is a cyclic number.

It is not a de Polignac number, because 56010561109 - 2⁹ = 56010560597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56010561199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28005280554 + 28005280555.

It is an arithmetic number, because the mean of its divisors is an integer number (28005280555).

Almost surely, 2^56010561109 is an apocalyptic number.

It is an amenable number.

56010561109 is a deficient number, since it is larger than the sum of its proper divisors (1).

56010561109 is an equidigital number, since it uses as much as digits as its factorization.

56010561109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 34.

The spelling of 56010561109 in words is "fifty-six billion, ten million, five hundred sixty-one thousand, one hundred nine".