28811578571 has 2 divisors, whose sum is σ = 28811578572. Its totient is φ = 28811578570.

The previous prime is 28811578559. The next prime is 28811578577. The reversal of 28811578571 is 17587511882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28811578571 - 2³⁴ = 11631709387 is a prime.

It is not a weakly prime, because it can be changed into another prime (28811578577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405789285 + 14405789286.

It is an arithmetic number, because the mean of its divisors is an integer number (14405789286).

Almost surely, 2^28811578571 is an apocalyptic number.

28811578571 is a deficient number, since it is larger than the sum of its proper divisors (1).

28811578571 is an equidigital number, since it uses as much as digits as its factorization.

28811578571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1254400, while the sum is 53.

The spelling of 28811578571 in words is "twenty-eight billion, eight hundred eleven million, five hundred seventy-eight thousand, five hundred seventy-one".