681532330304 has 56 divisors (see below), whose sum is σ = 1612818768768. Its totient is φ = 279385920000.

The previous prime is 681532330301. The next prime is 681532330321. The reversal of 681532330304 is 403033235186.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681532330301) 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 7 ways as a sum of consecutive naturals, for example, 33060947 + ... + 33081554.

Almost surely, 2^681532330304 is an apocalyptic number.

681532330304 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

681532330304 is an abundant number, since it is smaller than the sum of its proper divisors (931286438464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681532330304 is a wasteful number, since it uses less digits than its factorization.

681532330304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66142543 (or 66142533 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 681532330304 in words is "six hundred eighty-one billion, five hundred thirty-two million, three hundred thirty thousand, three hundred four".