26728755673 has 2 divisors, whose sum is σ = 26728755674. Its totient is φ = 26728755672.

The previous prime is 26728755649. The next prime is 26728755701. The reversal of 26728755673 is 37655782762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20064155904 + 6664599769 = 141648^2 + 81637^2 .

It is a cyclic number.

It is not a de Polignac number, because 26728755673 - 2²¹ = 26726658521 is a prime.

It is not a weakly prime, because it can be changed into another prime (26728755173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13364377836 + 13364377837.

It is an arithmetic number, because the mean of its divisors is an integer number (13364377837).

Almost surely, 2^26728755673 is an apocalyptic number.

It is an amenable number.

26728755673 is a deficient number, since it is larger than the sum of its proper divisors (1).

26728755673 is an equidigital number, since it uses as much as digits as its factorization.

26728755673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29635200, while the sum is 58.

The spelling of 26728755673 in words is "twenty-six billion, seven hundred twenty-eight million, seven hundred fifty-five thousand, six hundred seventy-three".