28657132859 has 2 divisors, whose sum is σ = 28657132860. Its totient is φ = 28657132858.

The previous prime is 28657132841. The next prime is 28657132909. The reversal of 28657132859 is 95823175682.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28657132859 - 2²⁰ = 28656084283 is a prime.

It is not a weakly prime, because it can be changed into another prime (28657152859) 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, 14328566429 + 14328566430.

It is an arithmetic number, because the mean of its divisors is an integer number (14328566430).

Almost surely, 2^28657132859 is an apocalyptic number.

28657132859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28657132859 is an equidigital number, since it uses as much as digits as its factorization.

28657132859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 56.

The spelling of 28657132859 in words is "twenty-eight billion, six hundred fifty-seven million, one hundred thirty-two thousand, eight hundred fifty-nine".