42635653589 has 2 divisors, whose sum is σ = 42635653590. Its totient is φ = 42635653588.

The previous prime is 42635653537. The next prime is 42635653639. The reversal of 42635653589 is 98535653624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38047623364 + 4588030225 = 195058^2 + 67735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42635653589 is a prime.

It is a super-2 number, since 2×42635653589² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42635652589) 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, 21317826794 + 21317826795.

It is an arithmetic number, because the mean of its divisors is an integer number (21317826795).

Almost surely, 2^42635653589 is an apocalyptic number.

It is an amenable number.

42635653589 is a deficient number, since it is larger than the sum of its proper divisors (1).

42635653589 is an equidigital number, since it uses as much as digits as its factorization.

42635653589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328000, while the sum is 56.

The spelling of 42635653589 in words is "forty-two billion, six hundred thirty-five million, six hundred fifty-three thousand, five hundred eighty-nine".