42001151161565 has 8 divisors (see below), whose sum is σ = 51227633548248. Its totient is φ = 33050086159680.

The previous prime is 42001151161561. The next prime is 42001151161583. The reversal of 42001151161565 is 56516115110024.

It can be written as a sum of positive squares in 4 ways, for example, as 36382129081 + 41964769032484 = 190741^2 + 6478022^2 .

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

It is not a de Polignac number, because 42001151161565 - 2² = 42001151161561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42001151161561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68854345862 + ... + 68854346471.

It is an arithmetic number, because the mean of its divisors is an integer number (6403454193531).

Almost surely, 2^{42001151161565} is an apocalyptic number.

It is an amenable number.

42001151161565 is a deficient number, since it is larger than the sum of its proper divisors (9226482386683).

42001151161565 is a wasteful number, since it uses less digits than its factorization.

42001151161565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137708692399.

The product of its (nonzero) digits is 36000, while the sum is 38.

Adding to 42001151161565 its reverse (56516115110024), we get a palindrome (98517266271589).

The spelling of 42001151161565 in words is "forty-two trillion, one billion, one hundred fifty-one million, one hundred sixty-one thousand, five hundred sixty-five".