28027292876449 has 2 divisors, whose sum is σ = 28027292876450. Its totient is φ = 28027292876448.

The previous prime is 28027292876419. The next prime is 28027292876461. The reversal of 28027292876449 is 94467829272082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20354354096400 + 7672938780049 = 4511580^2 + 2770007^2 .

It is a cyclic number.

It is not a de Polignac number, because 28027292876449 - 2⁵ = 28027292876417 is a prime.

It is not a weakly prime, because it can be changed into another prime (28027292876419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14013646438224 + 14013646438225.

It is an arithmetic number, because the mean of its divisors is an integer number (14013646438225).

Almost surely, 2^{28027292876449} is an apocalyptic number.

It is an amenable number.

28027292876449 is a deficient number, since it is larger than the sum of its proper divisors (1).

28027292876449 is an equidigital number, since it uses as much as digits as its factorization.

28027292876449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 390168576, while the sum is 70.

The spelling of 28027292876449 in words is "twenty-eight trillion, twenty-seven billion, two hundred ninety-two million, eight hundred seventy-six thousand, four hundred forty-nine".