664423357345 has 16 divisors (see below), whose sum is σ = 872864062272. Its totient is φ = 481509495360.

The previous prime is 664423357313. The next prime is 664423357373. The reversal of 664423357345 is 543753324466.

It is not a de Polignac number, because 664423357345 - 2⁵ = 664423357313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664423357292 and 664423357301.

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, 21327942 + ... + 21359071.

It is an arithmetic number, because the mean of its divisors is an integer number (54554003892).

Almost surely, 2^664423357345 is an apocalyptic number.

It is an amenable number.

664423357345 is a deficient number, since it is larger than the sum of its proper divisors (208440704927).

664423357345 is a wasteful number, since it uses less digits than its factorization.

664423357345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42687312.

The product of its digits is 21772800, while the sum is 52.

The spelling of 664423357345 in words is "six hundred sixty-four billion, four hundred twenty-three million, three hundred fifty-seven thousand, three hundred forty-five".