42655385636 has 12 divisors (see below), whose sum is σ = 74650495500. Its totient is φ = 21326672640.

The previous prime is 42655385621. The next prime is 42655385639. The reversal of 42655385636 is 63658355624.

It can be written as a sum of positive squares in 2 ways, for example, as 9533569600 + 33121816036 = 97640^2 + 181994^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42655385639) 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 in 3 ways as a sum of consecutive naturals, for example, 156761 + ... + 331488.

It is an arithmetic number, because the mean of its divisors is an integer number (6220874625).

Almost surely, 2^42655385636 is an apocalyptic number.

It is an amenable number.

42655385636 is a deficient number, since it is larger than the sum of its proper divisors (31995109864).

42655385636 is a wasteful number, since it uses less digits than its factorization.

42655385636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510094 (or 510092 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 53.

The spelling of 42655385636 in words is "forty-two billion, six hundred fifty-five million, three hundred eighty-five thousand, six hundred thirty-six".