42365563565065 has 8 divisors (see below), whose sum is σ = 54749343684168. Its totient is φ = 31285339248000.

The previous prime is 42365563565063. The next prime is 42365563565119. The reversal of 42365563565065 is 56056536556324.

It can be written as a sum of positive squares in 4 ways, for example, as 9693776391289 + 32671787173776 = 3113483^2 + 5715924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42365563565065 - 2¹ = 42365563565063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42365563564994 and 42365563565012.

It is not an unprimeable number, because it can be changed into a prime (42365563565063) 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 7 ways as a sum of consecutive naturals, for example, 325888950436 + ... + 325888950565.

It is an arithmetic number, because the mean of its divisors is an integer number (6843667960521).

Almost surely, 2^{42365563565065} is an apocalyptic number.

It is an amenable number.

42365563565065 is a deficient number, since it is larger than the sum of its proper divisors (12383780119103).

42365563565065 is a wasteful number, since it uses less digits than its factorization.

42365563565065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651777901019.

The product of its (nonzero) digits is 291600000, while the sum is 61.

The spelling of 42365563565065 in words is "forty-two trillion, three hundred sixty-five billion, five hundred sixty-three million, five hundred sixty-five thousand, sixty-five".