42443073545 has 8 divisors (see below), whose sum is σ = 53927670024. Its totient is φ = 31957137664.

The previous prime is 42443073527. The next prime is 42443073557. The reversal of 42443073545 is 54537034424.

It can be written as a sum of positive squares in 4 ways, for example, as 16219805449 + 26223268096 = 127357^2 + 161936^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42443073545 - 2⁶ = 42443073481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 249665054 + ... + 249665223.

It is an arithmetic number, because the mean of its divisors is an integer number (6740958753).

Almost surely, 2^42443073545 is an apocalyptic number.

It is an amenable number.

42443073545 is a deficient number, since it is larger than the sum of its proper divisors (11484596479).

42443073545 is a wasteful number, since it uses less digits than its factorization.

42443073545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499330299.

The product of its (nonzero) digits is 806400, while the sum is 41.

The spelling of 42443073545 in words is "forty-two billion, four hundred forty-three million, seventy-three thousand, five hundred forty-five".