78324408144223 has 2 divisors, whose sum is σ = 78324408144224. Its totient is φ = 78324408144222.

The previous prime is 78324408144209. The next prime is 78324408144239. The reversal of 78324408144223 is 32244180442387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78324408144223 - 2⁹ = 78324408143711 is a prime.

It is a super-2 number, since 2×78324408144223² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78324408144923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39162204072111 + 39162204072112.

It is an arithmetic number, because the mean of its divisors is an integer number (39162204072112).

Almost surely, 2^{78324408144223} is an apocalyptic number.

78324408144223 is a deficient number, since it is larger than the sum of its proper divisors (1).

78324408144223 is an equidigital number, since it uses as much as digits as its factorization.

78324408144223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8257536, while the sum is 52.

The spelling of 78324408144223 in words is "seventy-eight trillion, three hundred twenty-four billion, four hundred eight million, one hundred forty-four thousand, two hundred twenty-three".