56623381589 has 2 divisors, whose sum is σ = 56623381590. Its totient is φ = 56623381588.

The previous prime is 56623381583. The next prime is 56623381597. The reversal of 56623381589 is 98518332665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56620202500 + 3179089 = 237950^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 56623381589 - 2¹⁶ = 56623316053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56623381583) 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, 28311690794 + 28311690795.

It is an arithmetic number, because the mean of its divisors is an integer number (28311690795).

Almost surely, 2^56623381589 is an apocalyptic number.

It is an amenable number.

56623381589 is a deficient number, since it is larger than the sum of its proper divisors (1).

56623381589 is an equidigital number, since it uses as much as digits as its factorization.

56623381589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 56.

The spelling of 56623381589 in words is "fifty-six billion, six hundred twenty-three million, three hundred eighty-one thousand, five hundred eighty-nine".