42844011493 has 2 divisors, whose sum is σ = 42844011494. Its totient is φ = 42844011492.

The previous prime is 42844011391. The next prime is 42844011527. The reversal of 42844011493 is 39411044824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34643260129 + 8200751364 = 186127^2 + 90558^2 .

It is a cyclic number.

It is not a de Polignac number, because 42844011493 - 2¹⁷ = 42843880421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42844011293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21422005746 + 21422005747.

It is an arithmetic number, because the mean of its divisors is an integer number (21422005747).

Almost surely, 2^42844011493 is an apocalyptic number.

It is an amenable number.

42844011493 is a deficient number, since it is larger than the sum of its proper divisors (1).

42844011493 is an equidigital number, since it uses as much as digits as its factorization.

42844011493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 42844011493 in words is "forty-two billion, eight hundred forty-four million, eleven thousand, four hundred ninety-three".