27856782103 has 2 divisors, whose sum is σ = 27856782104. Its totient is φ = 27856782102.

The previous prime is 27856782059. The next prime is 27856782133. The reversal of 27856782103 is 30128765872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27856782103 - 2²⁵ = 27823227671 is a prime.

It is a super-2 number, since 2×27856782103² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27856782133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13928391051 + 13928391052.

It is an arithmetic number, because the mean of its divisors is an integer number (13928391052).

Almost surely, 2^27856782103 is an apocalyptic number.

27856782103 is a deficient number, since it is larger than the sum of its proper divisors (1).

27856782103 is an equidigital number, since it uses as much as digits as its factorization.

27856782103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 27856782103 in words is "twenty-seven billion, eight hundred fifty-six million, seven hundred eighty-two thousand, one hundred three".