867823328777 has 2 divisors, whose sum is σ = 867823328778. Its totient is φ = 867823328776.

The previous prime is 867823328747. The next prime is 867823328789. The reversal of 867823328777 is 777823328768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858196579321 + 9626749456 = 926389^2 + 98116^2 .

It is a cyclic number.

It is not a de Polignac number, because 867823328777 - 2¹⁴ = 867823312393 is a prime.

It is not a weakly prime, because it can be changed into another prime (867823328747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433911664388 + 433911664389.

It is an arithmetic number, because the mean of its divisors is an integer number (433911664389).

Almost surely, 2^867823328777 is an apocalyptic number.

It is an amenable number.

867823328777 is a deficient number, since it is larger than the sum of its proper divisors (1).

867823328777 is an equidigital number, since it uses as much as digits as its factorization.

867823328777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 265531392, while the sum is 68.

Subtracting from 867823328777 its reverse (777823328768), we obtain a palindrome (90000000009).

The spelling of 867823328777 in words is "eight hundred sixty-seven billion, eight hundred twenty-three million, three hundred twenty-eight thousand, seven hundred seventy-seven".