28056154277 has 2 divisors, whose sum is σ = 28056154278. Its totient is φ = 28056154276.

The previous prime is 28056154271. The next prime is 28056154297. The reversal of 28056154277 is 77245165082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16975223521 + 11080930756 = 130289^2 + 105266^2 .

It is a cyclic number.

It is not a de Polignac number, because 28056154277 - 2⁴ = 28056154261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28056154271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14028077138 + 14028077139.

It is an arithmetic number, because the mean of its divisors is an integer number (14028077139).

Almost surely, 2^28056154277 is an apocalyptic number.

It is an amenable number.

28056154277 is a deficient number, since it is larger than the sum of its proper divisors (1).

28056154277 is an equidigital number, since it uses as much as digits as its factorization.

28056154277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 28056154277 in words is "twenty-eight billion, fifty-six million, one hundred fifty-four thousand, two hundred seventy-seven".