668478301810 has 32 divisors (see below), whose sum is σ = 1348125291072. Its totient is φ = 236513206080.

The previous prime is 668478301783. The next prime is 668478301849. The reversal of 668478301810 is 18103874866.

668478301810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×668478301810² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82118572 + ... + 82126711.

It is an arithmetic number, because the mean of its divisors is an integer number (42128915346).

Almost surely, 2^668478301810 is an apocalyptic number.

668478301810 is an abundant number, since it is smaller than the sum of its proper divisors (679646989262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668478301810 is a wasteful number, since it uses less digits than its factorization.

668478301810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164245338.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 668478301810 in words is "six hundred sixty-eight billion, four hundred seventy-eight million, three hundred one thousand, eight hundred ten".