28395294673 has 2 divisors, whose sum is σ = 28395294674. Its totient is φ = 28395294672.

The previous prime is 28395294671. The next prime is 28395294703. The reversal of 28395294673 is 37649259382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19815348289 + 8579946384 = 140767^2 + 92628^2 .

It is a cyclic number.

It is not a de Polignac number, because 28395294673 - 2¹ = 28395294671 is a prime.

Together with 28395294671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28395294671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14197647336 + 14197647337.

It is an arithmetic number, because the mean of its divisors is an integer number (14197647337).

Almost surely, 2^28395294673 is an apocalyptic number.

It is an amenable number.

28395294673 is a deficient number, since it is larger than the sum of its proper divisors (1).

28395294673 is an equidigital number, since it uses as much as digits as its factorization.

28395294673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 58.

The spelling of 28395294673 in words is "twenty-eight billion, three hundred ninety-five million, two hundred ninety-four thousand, six hundred seventy-three".