668014813387 has 2 divisors, whose sum is σ = 668014813388. Its totient is φ = 668014813386.

The previous prime is 668014813369. The next prime is 668014813457. The reversal of 668014813387 is 783318410866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668014813387 - 2¹⁵ = 668014780619 is a prime.

It is not a weakly prime, because it can be changed into another prime (668014813987) 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, 334007406693 + 334007406694.

It is an arithmetic number, because the mean of its divisors is an integer number (334007406694).

Almost surely, 2^668014813387 is an apocalyptic number.

668014813387 is a deficient number, since it is larger than the sum of its proper divisors (1).

668014813387 is an equidigital number, since it uses as much as digits as its factorization.

668014813387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 668014813387 in words is "six hundred sixty-eight billion, fourteen million, eight hundred thirteen thousand, three hundred eighty-seven".