28571742839 has 2 divisors, whose sum is σ = 28571742840. Its totient is φ = 28571742838.

The previous prime is 28571742833. The next prime is 28571742863. The reversal of 28571742839 is 93824717582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28571742839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28571742833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14285871419 + 14285871420.

It is an arithmetic number, because the mean of its divisors is an integer number (14285871420).

Almost surely, 2^28571742839 is an apocalyptic number.

28571742839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28571742839 is an equidigital number, since it uses as much as digits as its factorization.

28571742839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 56.

The spelling of 28571742839 in words is "twenty-eight billion, five hundred seventy-one million, seven hundred forty-two thousand, eight hundred thirty-nine".