7327701721668 has 12 divisors (see below), whose sum is σ = 17097970683920. Its totient is φ = 2442567240552.

The previous prime is 7327701721661. The next prime is 7327701721693. The reversal of 7327701721668 is 8661271077237.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (7327701721661) 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 3 ways as a sum of consecutive naturals, for example, 305320905058 + ... + 305320905081.

Almost surely, 2^{7327701721668} is an apocalyptic number.

It is an amenable number.

7327701721668 is an abundant number, since it is smaller than the sum of its proper divisors (9770268962252).

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

7327701721668 is a wasteful number, since it uses less digits than its factorization.

7327701721668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610641810146 (or 610641810144 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 57.

The spelling of 7327701721668 in words is "seven trillion, three hundred twenty-seven billion, seven hundred one million, seven hundred twenty-one thousand, six hundred sixty-eight".