28055976757 has 2 divisors, whose sum is σ = 28055976758. Its totient is φ = 28055976756.

The previous prime is 28055976733. The next prime is 28055976769. The reversal of 28055976757 is 75767955082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26699233201 + 1356743556 = 163399^2 + 36834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28055976757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28055976695 and 28055976704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28055176757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027988378 + 14027988379.

It is an arithmetic number, because the mean of its divisors is an integer number (14027988379).

Almost surely, 2^28055976757 is an apocalyptic number.

It is an amenable number.

28055976757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28055976757 is an equidigital number, since it uses as much as digits as its factorization.

28055976757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37044000, while the sum is 61.

The spelling of 28055976757 in words is "twenty-eight billion, fifty-five million, nine hundred seventy-six thousand, seven hundred fifty-seven".