28606569839 has 2 divisors, whose sum is σ = 28606569840. Its totient is φ = 28606569838.

The previous prime is 28606569809. The next prime is 28606569857. The reversal of 28606569839 is 93896560682.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28606569839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28606569809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14303284919 + 14303284920.

It is an arithmetic number, because the mean of its divisors is an integer number (14303284920).

Almost surely, 2^28606569839 is an apocalyptic number.

28606569839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28606569839 is an equidigital number, since it uses as much as digits as its factorization.

28606569839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 28606569839 in words is "twenty-eight billion, six hundred six million, five hundred sixty-nine thousand, eight hundred thirty-nine".