27858423773 has 2 divisors, whose sum is σ = 27858423774. Its totient is φ = 27858423772.

The previous prime is 27858423767. The next prime is 27858423793. The reversal of 27858423773 is 37732485872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24700208569 + 3158215204 = 157163^2 + 56198^2 .

It is a cyclic number.

It is not a de Polignac number, because 27858423773 - 2⁴ = 27858423757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27858423743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13929211886 + 13929211887.

It is an arithmetic number, because the mean of its divisors is an integer number (13929211887).

Almost surely, 2^27858423773 is an apocalyptic number.

It is an amenable number.

27858423773 is a deficient number, since it is larger than the sum of its proper divisors (1).

27858423773 is an equidigital number, since it uses as much as digits as its factorization.

27858423773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15805440, while the sum is 56.

The spelling of 27858423773 in words is "twenty-seven billion, eight hundred fifty-eight million, four hundred twenty-three thousand, seven hundred seventy-three".