42878535238111 has 2 divisors, whose sum is σ = 42878535238112. Its totient is φ = 42878535238110.

The previous prime is 42878535238109. The next prime is 42878535238229. The reversal of 42878535238111 is 11183253587824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42878535238111 - 2¹ = 42878535238109 is a prime.

Together with 42878535238109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878535238411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439267619055 + 21439267619056.

It is an arithmetic number, because the mean of its divisors is an integer number (21439267619056).

Almost surely, 2^{42878535238111} is an apocalyptic number.

42878535238111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878535238111 is an equidigital number, since it uses as much as digits as its factorization.

42878535238111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12902400, while the sum is 58.

The spelling of 42878535238111 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred thirty-five million, two hundred thirty-eight thousand, one hundred eleven".