666454646364 has 48 divisors (see below), whose sum is σ = 1773191554848. Its totient is φ = 193000439808.

The previous prime is 666454646339. The next prime is 666454646383. The reversal of 666454646364 is 463646454666.

It is a junction number, because it is equal to n+sod(n) for n = 666454646298 and 666454646307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125648677 + ... + 125653980.

It is an arithmetic number, because the mean of its divisors is an integer number (36941490726).

Almost surely, 2^666454646364 is an apocalyptic number.

It is an amenable number.

666454646364 is an abundant number, since it is smaller than the sum of its proper divisors (1106736908484).

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

666454646364 is a wasteful number, since it uses less digits than its factorization.

666454646364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251302694 (or 251302692 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 60.

The spelling of 666454646364 in words is "six hundred sixty-six billion, four hundred fifty-four million, six hundred forty-six thousand, three hundred sixty-four".