28873446971 has 2 divisors, whose sum is σ = 28873446972. Its totient is φ = 28873446970.

The previous prime is 28873446863. The next prime is 28873446989. The reversal of 28873446971 is 17964437882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28873446971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28873446971.

It is not a weakly prime, because it can be changed into another prime (28873442971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14436723485 + 14436723486.

It is an arithmetic number, because the mean of its divisors is an integer number (14436723486).

Almost surely, 2^28873446971 is an apocalyptic number.

28873446971 is a deficient number, since it is larger than the sum of its proper divisors (1).

28873446971 is an equidigital number, since it uses as much as digits as its factorization.

28873446971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 59.

The spelling of 28873446971 in words is "twenty-eight billion, eight hundred seventy-three million, four hundred forty-six thousand, nine hundred seventy-one".