28147129382641 has 2 divisors, whose sum is σ = 28147129382642. Its totient is φ = 28147129382640.

The previous prime is 28147129382627. The next prime is 28147129382651. The reversal of 28147129382641 is 14628392174182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26227754660416 + 1919374722225 = 5121304^2 + 1385415^2 .

It is a cyclic number.

It is not a de Polignac number, because 28147129382641 - 2²⁹ = 28146592511729 is a prime.

It is not a weakly prime, because it can be changed into another prime (28147129382611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14073564691320 + 14073564691321.

It is an arithmetic number, because the mean of its divisors is an integer number (14073564691321).

Almost surely, 2^{28147129382641} is an apocalyptic number.

It is an amenable number.

28147129382641 is a deficient number, since it is larger than the sum of its proper divisors (1).

28147129382641 is an equidigital number, since it uses as much as digits as its factorization.

28147129382641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 58.

The spelling of 28147129382641 in words is "twenty-eight trillion, one hundred forty-seven billion, one hundred twenty-nine million, three hundred eighty-two thousand, six hundred forty-one".