28272013571 has 2 divisors, whose sum is σ = 28272013572. Its totient is φ = 28272013570.

The previous prime is 28272013487. The next prime is 28272013597. The reversal of 28272013571 is 17531027282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28272013571 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28272013771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14136006785 + 14136006786.

It is an arithmetic number, because the mean of its divisors is an integer number (14136006786).

Almost surely, 2^28272013571 is an apocalyptic number.

28272013571 is a deficient number, since it is larger than the sum of its proper divisors (1).

28272013571 is an equidigital number, since it uses as much as digits as its factorization.

28272013571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 28272013571 in words is "twenty-eight billion, two hundred seventy-two million, thirteen thousand, five hundred seventy-one".