42338406643 has 16 divisors (see below), whose sum is σ = 47551280896. Its totient is φ = 37430968320.

The previous prime is 42338406611. The next prime is 42338406659. The reversal of 42338406643 is 34660483324.

It is a cyclic number.

It is not a de Polignac number, because 42338406643 - 2⁵ = 42338406611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42338406643.

It is not an unprimeable number, because it can be changed into a prime (42338706643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 502446 + ... + 580627.

It is an arithmetic number, because the mean of its divisors is an integer number (2971955056).

Almost surely, 2^42338406643 is an apocalyptic number.

42338406643 is a deficient number, since it is larger than the sum of its proper divisors (5212874253).

42338406643 is a wasteful number, since it uses less digits than its factorization.

42338406643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083214.

The product of its (nonzero) digits is 995328, while the sum is 43.

Adding to 42338406643 its reverse (34660483324), we get a palindrome (76998889967).

The spelling of 42338406643 in words is "forty-two billion, three hundred thirty-eight million, four hundred six thousand, six hundred forty-three".