28870312571 has 2 divisors, whose sum is σ = 28870312572. Its totient is φ = 28870312570.

The previous prime is 28870312567. The next prime is 28870312589. The reversal of 28870312571 is 17521307882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28870312571 - 2² = 28870312567 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28870312501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14435156285 + 14435156286.

It is an arithmetic number, because the mean of its divisors is an integer number (14435156286).

Almost surely, 2^28870312571 is an apocalyptic number.

28870312571 is a deficient number, since it is larger than the sum of its proper divisors (1).

28870312571 is an equidigital number, since it uses as much as digits as its factorization.

28870312571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 28870312571 in words is "twenty-eight billion, eight hundred seventy million, three hundred twelve thousand, five hundred seventy-one".