42244205537 has 2 divisors, whose sum is σ = 42244205538. Its totient is φ = 42244205536.

The previous prime is 42244205461. The next prime is 42244205543. The reversal of 42244205537 is 73550244224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40545446881 + 1698758656 = 201359^2 + 41216^2 .

It is a cyclic number.

It is not a de Polignac number, because 42244205537 - 2²⁰ = 42243156961 is a prime.

It is a super-3 number, since 3×42244205537³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42244205537.

It is not a weakly prime, because it can be changed into another prime (42244205137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122102768 + 21122102769.

It is an arithmetic number, because the mean of its divisors is an integer number (21122102769).

Almost surely, 2^42244205537 is an apocalyptic number.

It is an amenable number.

42244205537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42244205537 is an equidigital number, since it uses as much as digits as its factorization.

42244205537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 38.

The spelling of 42244205537 in words is "forty-two billion, two hundred forty-four million, two hundred five thousand, five hundred thirty-seven".