56190440689 has 2 divisors, whose sum is σ = 56190440690. Its totient is φ = 56190440688.

The previous prime is 56190440671. The next prime is 56190440711. The reversal of 56190440689 is 98604409165.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31767002289 + 24423438400 = 178233^2 + 156280^2 .

It is a cyclic number.

It is not a de Polignac number, because 56190440689 - 2³⁵ = 21830702321 is a prime.

It is not a weakly prime, because it can be changed into another prime (56190740689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28095220344 + 28095220345.

It is an arithmetic number, because the mean of its divisors is an integer number (28095220345).

Almost surely, 2^56190440689 is an apocalyptic number.

It is an amenable number.

56190440689 is a deficient number, since it is larger than the sum of its proper divisors (1).

56190440689 is an equidigital number, since it uses as much as digits as its factorization.

56190440689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 56190440689 in words is "fifty-six billion, one hundred ninety million, four hundred forty thousand, six hundred eighty-nine".