664405331143 has 8 divisors (see below), whose sum is σ = 667826804000. Its totient is φ = 660984686208.

The previous prime is 664405331137. The next prime is 664405331173. The reversal of 664405331143 is 341133504466.

664405331143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664405331143 - 2¹⁷ = 664405200071 is a prime.

It is a super-3 number, since 3×664405331143³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664405331096 and 664405331105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664405331173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435603 + ... + 1841131.

It is an arithmetic number, because the mean of its divisors is an integer number (83478350500).

Almost surely, 2^664405331143 is an apocalyptic number.

664405331143 is a deficient number, since it is larger than the sum of its proper divisors (3421472857).

664405331143 is a wasteful number, since it uses less digits than its factorization.

664405331143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413961.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 664405331143 in words is "six hundred sixty-four billion, four hundred five million, three hundred thirty-one thousand, one hundred forty-three".