28271539757 has 2 divisors, whose sum is σ = 28271539758. Its totient is φ = 28271539756.

The previous prime is 28271539729. The next prime is 28271539831. The reversal of 28271539757 is 75793517282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25899752356 + 2371787401 = 160934^2 + 48701^2 .

It is a cyclic number.

It is not a de Polignac number, because 28271539757 - 2⁸ = 28271539501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28271539357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14135769878 + 14135769879.

It is an arithmetic number, because the mean of its divisors is an integer number (14135769879).

Almost surely, 2^28271539757 is an apocalyptic number.

It is an amenable number.

28271539757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28271539757 is an equidigital number, since it uses as much as digits as its factorization.

28271539757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7408800, while the sum is 56.

The spelling of 28271539757 in words is "twenty-eight billion, two hundred seventy-one million, five hundred thirty-nine thousand, seven hundred fifty-seven".