1878856778027 has 2 divisors, whose sum is σ = 1878856778028. Its totient is φ = 1878856778026.

The previous prime is 1878856777951. The next prime is 1878856778081. The reversal of 1878856778027 is 7208776588781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1878856778027 - 2⁸ = 1878856777771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1878856778527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 939428389013 + 939428389014.

It is an arithmetic number, because the mean of its divisors is an integer number (939428389014).

Almost surely, 2^{1878856778027} is an apocalyptic number.

1878856778027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1878856778027 is an equidigital number, since it uses as much as digits as its factorization.

1878856778027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 590069760, while the sum is 74.

The spelling of 1878856778027 in words is "one trillion, eight hundred seventy-eight billion, eight hundred fifty-six million, seven hundred seventy-eight thousand, twenty-seven".