28657586429 has 2 divisors, whose sum is σ = 28657586430. Its totient is φ = 28657586428.

The previous prime is 28657586327. The next prime is 28657586459. The reversal of 28657586429 is 92468575682.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26868127225 + 1789459204 = 163915^2 + 42302^2 .

It is a cyclic number.

It is not a de Polignac number, because 28657586429 - 2⁸ = 28657586173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28657586459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14328793214 + 14328793215.

It is an arithmetic number, because the mean of its divisors is an integer number (14328793215).

Almost surely, 2^28657586429 is an apocalyptic number.

It is an amenable number.

28657586429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28657586429 is an equidigital number, since it uses as much as digits as its factorization.

28657586429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 62.

The spelling of 28657586429 in words is "twenty-eight billion, six hundred fifty-seven million, five hundred eighty-six thousand, four hundred twenty-nine".