42877891843 has 2 divisors, whose sum is σ = 42877891844. Its totient is φ = 42877891842.

The previous prime is 42877891753. The next prime is 42877891853. The reversal of 42877891843 is 34819877824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42877891843 - 2¹³ = 42877883651 is a prime.

It is not a weakly prime, because it can be changed into another prime (42877891853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21438945921 + 21438945922.

It is an arithmetic number, because the mean of its divisors is an integer number (21438945922).

Almost surely, 2^42877891843 is an apocalyptic number.

42877891843 is a deficient number, since it is larger than the sum of its proper divisors (1).

42877891843 is an equidigital number, since it uses as much as digits as its factorization.

42877891843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21676032, while the sum is 61.

The spelling of 42877891843 in words is "forty-two billion, eight hundred seventy-seven million, eight hundred ninety-one thousand, eight hundred forty-three".