28948226599477 has 2 divisors, whose sum is σ = 28948226599478. Its totient is φ = 28948226599476.

The previous prime is 28948226599441. The next prime is 28948226599499. The reversal of 28948226599477 is 77499562284982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23439212056836 + 5509014542641 = 4841406^2 + 2347129^2 .

It is a cyclic number.

It is not a de Polignac number, because 28948226599477 - 2¹⁵ = 28948226566709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28948226599477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28948226579477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14474113299738 + 14474113299739.

It is an arithmetic number, because the mean of its divisors is an integer number (14474113299739).

Almost surely, 2^{28948226599477} is an apocalyptic number.

It is an amenable number.

28948226599477 is a deficient number, since it is larger than the sum of its proper divisors (1).

28948226599477 is an equidigital number, since it uses as much as digits as its factorization.

28948226599477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8778792960, while the sum is 82.

The spelling of 28948226599477 in words is "twenty-eight trillion, nine hundred forty-eight billion, two hundred twenty-six million, five hundred ninety-nine thousand, four hundred seventy-seven".