664423201012343 has 2 divisors, whose sum is σ = 664423201012344. Its totient is φ = 664423201012342.

The previous prime is 664423201012301. The next prime is 664423201012367. The reversal of 664423201012343 is 343210102324466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664423201012343 - 2⁴⁶ = 594054456834679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664423201012343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664423801012343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332211600506171 + 332211600506172.

It is an arithmetic number, because the mean of its divisors is an integer number (332211600506172).

Almost surely, 2^{664423201012343} is an apocalyptic number.

664423201012343 is a deficient number, since it is larger than the sum of its proper divisors (1).

664423201012343 is an equidigital number, since it uses as much as digits as its factorization.

664423201012343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 664423201012343 in words is "six hundred sixty-four trillion, four hundred twenty-three billion, two hundred one million, twelve thousand, three hundred forty-three".