12721616601 has 8 divisors (see below), whose sum is σ = 16973568384. Its totient is φ = 8475371280.

The previous prime is 12721616581. The next prime is 12721616627. The reversal of 12721616601 is 10661612721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12721616601 - 2⁷ = 12721616473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12721616651) 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, 1421410 + ... + 1430331.

It is an arithmetic number, because the mean of its divisors is an integer number (2121696048).

Almost surely, 2^12721616601 is an apocalyptic number.

It is an amenable number.

12721616601 is a deficient number, since it is larger than the sum of its proper divisors (4251951783).

12721616601 is a wasteful number, since it uses less digits than its factorization.

12721616601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853231.

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 12721616601 in words is "twelve billion, seven hundred twenty-one million, six hundred sixteen thousand, six hundred one".