28132697647 has 2 divisors, whose sum is σ = 28132697648. Its totient is φ = 28132697646.

The previous prime is 28132697633. The next prime is 28132697653. The reversal of 28132697647 is 74679623182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28132697647 - 2²³ = 28124309039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28132697657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14066348823 + 14066348824.

It is an arithmetic number, because the mean of its divisors is an integer number (14066348824).

Almost surely, 2^28132697647 is an apocalyptic number.

28132697647 is a deficient number, since it is larger than the sum of its proper divisors (1).

28132697647 is an equidigital number, since it uses as much as digits as its factorization.

28132697647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The spelling of 28132697647 in words is "twenty-eight billion, one hundred thirty-two million, six hundred ninety-seven thousand, six hundred forty-seven".