42104016565 has 16 divisors (see below), whose sum is σ = 55100102400. Its totient is φ = 30698620992.

The previous prime is 42104016557. The next prime is 42104016607. The reversal of 42104016565 is 56561040124.

It is not a de Polignac number, because 42104016565 - 2³ = 42104016557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42104016565.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 4094575 + ... + 4104844.

It is an arithmetic number, because the mean of its divisors is an integer number (3443756400).

Almost surely, 2^42104016565 is an apocalyptic number.

It is an amenable number.

42104016565 is a deficient number, since it is larger than the sum of its proper divisors (12996085835).

42104016565 is a wasteful number, since it uses less digits than its factorization.

42104016565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8199516.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 42104016565 its reverse (56561040124), we get a palindrome (98665056689).

The spelling of 42104016565 in words is "forty-two billion, one hundred four million, sixteen thousand, five hundred sixty-five".