28879542812947 has 2 divisors, whose sum is σ = 28879542812948. Its totient is φ = 28879542812946.

The previous prime is 28879542812927. The next prime is 28879542812963. The reversal of 28879542812947 is 74921824597882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28879542812947 - 2⁴³ = 20083449790739 is a prime.

It is not a weakly prime, because it can be changed into another prime (28879542812927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14439771406473 + 14439771406474.

It is an arithmetic number, because the mean of its divisors is an integer number (14439771406474).

Almost surely, 2^{28879542812947} is an apocalyptic number.

28879542812947 is a deficient number, since it is larger than the sum of its proper divisors (1).

28879542812947 is an equidigital number, since it uses as much as digits as its factorization.

28879542812947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1300561920, while the sum is 76.

The spelling of 28879542812947 in words is "twenty-eight trillion, eight hundred seventy-nine billion, five hundred forty-two million, eight hundred twelve thousand, nine hundred forty-seven".