664803516043 has 12 divisors (see below), whose sum is σ = 706568506560. Its totient is φ = 625379760512.

The previous prime is 664803516019. The next prime is 664803516059. The reversal of 664803516043 is 340615308466.

It is not a de Polignac number, because 664803516043 - 2³³ = 656213581451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664803515984 and 664803516002.

It is not an unprimeable number, because it can be changed into a prime (664803516343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12763 + ... + 1153156.

It is an arithmetic number, because the mean of its divisors is an integer number (58880708880).

Almost surely, 2^664803516043 is an apocalyptic number.

664803516043 is a deficient number, since it is larger than the sum of its proper divisors (41764990517).

664803516043 is a wasteful number, since it uses less digits than its factorization.

664803516043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167926 (or 1167909 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 664803516043 in words is "six hundred sixty-four billion, eight hundred three million, five hundred sixteen thousand, forty-three".