673776542231087 has 2 divisors, whose sum is σ = 673776542231088. Its totient is φ = 673776542231086.

The previous prime is 673776542231077. The next prime is 673776542231141. The reversal of 673776542231087 is 780132245677376.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673776542231087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673776542231057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336888271115543 + 336888271115544.

It is an arithmetic number, because the mean of its divisors is an integer number (336888271115544).

Almost surely, 2^{673776542231087} is an apocalyptic number.

673776542231087 is a deficient number, since it is larger than the sum of its proper divisors (1).

673776542231087 is an equidigital number, since it uses as much as digits as its factorization.

673776542231087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497871360, while the sum is 68.

The spelling of 673776542231087 in words is "six hundred seventy-three trillion, seven hundred seventy-six billion, five hundred forty-two million, two hundred thirty-one thousand, eighty-seven".