664723234413326 has 16 divisors (see below), whose sum is σ = 1087731303068160. Its totient is φ = 302146265281080.

The previous prime is 664723234413299. The next prime is 664723234413367. The reversal of 664723234413326 is 623314432327466.

664723234413326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22590956 + ... + 42892863.

It is an arithmetic number, because the mean of its divisors is an integer number (67983206441760).

Almost surely, 2^{664723234413326} is an apocalyptic number.

664723234413326 is a deficient number, since it is larger than the sum of its proper divisors (423008068654834).

664723234413326 is a wasteful number, since it uses less digits than its factorization.

664723234413326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65945239.

The product of its digits is 62705664, while the sum is 56.

The spelling of 664723234413326 in words is "six hundred sixty-four trillion, seven hundred twenty-three billion, two hundred thirty-four million, four hundred thirteen thousand, three hundred twenty-six".