42531533465 has 4 divisors (see below), whose sum is σ = 51037840164. Its totient is φ = 34025226768.

The previous prime is 42531533441. The next prime is 42531533483. The reversal of 42531533465 is 56433513524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4679107216 + 37852426249 = 68404^2 + 194557^2 .

It is a cyclic number.

It is not a de Polignac number, because 42531533465 - 2¹⁰ = 42531532441 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4253153342 + ... + 4253153351.

It is an arithmetic number, because the mean of its divisors is an integer number (12759460041).

Almost surely, 2^42531533465 is an apocalyptic number.

It is an amenable number.

42531533465 is a deficient number, since it is larger than the sum of its proper divisors (8506306699).

42531533465 is an equidigital number, since it uses as much as digits as its factorization.

42531533465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506306698.

The product of its digits is 648000, while the sum is 41.

The spelling of 42531533465 in words is "forty-two billion, five hundred thirty-one million, five hundred thirty-three thousand, four hundred sixty-five".