668014718229 has 24 divisors (see below), whose sum is σ = 965786701880. Its totient is φ = 444938769792.

The previous prime is 668014718227. The next prime is 668014718251. The reversal of 668014718229 is 922817410866.

It is a happy number.

668014718229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38177252100 + 629837466129 = 195390^2 + 793623^2 .

It is not a de Polignac number, because 668014718229 - 2¹ = 668014718227 is a prime.

It is a super-3 number, since 3×668014718229³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668014718221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73331127 + ... + 73340235.

Almost surely, 2^668014718229 is an apocalyptic number.

It is an amenable number.

668014718229 is a deficient number, since it is larger than the sum of its proper divisors (297771983651).

668014718229 is a wasteful number, since it uses less digits than its factorization.

668014718229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15621 (or 15618 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 668014718229 in words is "six hundred sixty-eight billion, fourteen million, seven hundred eighteen thousand, two hundred twenty-nine".