723685404586328 has 16 divisors (see below), whose sum is σ = 1356912958392000. Its totient is φ = 361841949015136.

The previous prime is 723685404586301. The next prime is 723685404586381. The reversal of 723685404586328 is 823685404586327.

It is a super-2 number, since 2×723685404586328² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 90066248 + ... + 97771671.

It is an arithmetic number, because the mean of its divisors is an integer number (84807059899500).

Almost surely, 2^{723685404586328} is an apocalyptic number.

It is an amenable number.

723685404586328 is a deficient number, since it is larger than the sum of its proper divisors (633227553805672).

723685404586328 is a wasteful number, since it uses less digits than its factorization.

723685404586328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188319514 (or 188319510 counting only the distinct ones).

The product of its (nonzero) digits is 1857945600, while the sum is 71.

Subtracting 723685404586328 from its reverse (823685404586327), we obtain a palindrome (99999999999999).

The spelling of 723685404586328 in words is "seven hundred twenty-three trillion, six hundred eighty-five billion, four hundred four million, five hundred eighty-six thousand, three hundred twenty-eight".