668313751471 has 2 divisors, whose sum is σ = 668313751472. Its totient is φ = 668313751470.

The previous prime is 668313751439. The next prime is 668313751517. The reversal of 668313751471 is 174157313866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668313751471 - 2⁵ = 668313751439 is a prime.

It is a super-3 number, since 3×668313751471³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668313757471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334156875735 + 334156875736.

It is an arithmetic number, because the mean of its divisors is an integer number (334156875736).

Almost surely, 2^668313751471 is an apocalyptic number.

668313751471 is a deficient number, since it is larger than the sum of its proper divisors (1).

668313751471 is an equidigital number, since it uses as much as digits as its factorization.

668313751471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 52.

The spelling of 668313751471 in words is "six hundred sixty-eight billion, three hundred thirteen million, seven hundred fifty-one thousand, four hundred seventy-one".