28419313872649 has 6 divisors (see below), whose sum is σ = 33059201851914. Its totient is φ = 24359411890800.

The previous prime is 28419313872641. The next prime is 28419313872671. The reversal of 28419313872649 is 94627831391482.

It can be written as a sum of positive squares in only one way, i.e., 27380887655625 + 1038426217024 = 5232675^2 + 1019032^2 .

It is not a de Polignac number, because 28419313872649 - 2³ = 28419313872641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28419313872641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289992998652 + ... + 289992998749.

It is an arithmetic number, because the mean of its divisors is an integer number (5509866975319).

Almost surely, 2^{28419313872649} is an apocalyptic number.

It is an amenable number.

28419313872649 is a deficient number, since it is larger than the sum of its proper divisors (4639887979265).

28419313872649 is an equidigital number, since it uses as much as digits as its factorization.

28419313872649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579985997415 (or 579985997408 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 67.

The spelling of 28419313872649 in words is "twenty-eight trillion, four hundred nineteen billion, three hundred thirteen million, eight hundred seventy-two thousand, six hundred forty-nine".