3301679646721 has 4 divisors (see below), whose sum is σ = 3301838486100. Its totient is φ = 3301520807344.

The previous prime is 3301679646709. The next prime is 3301679646751. The reversal of 3301679646721 is 1276469761033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1809861686721 + 1491817960000 = 1345311^2 + 1221400^2 .

It is a cyclic number.

It is not a de Polignac number, because 3301679646721 - 2²³ = 3301671258113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3301679646751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79388506 + ... + 79430083.

It is an arithmetic number, because the mean of its divisors is an integer number (825459621525).

Almost surely, 2^{3301679646721} is an apocalyptic number.

It is an amenable number.

3301679646721 is a deficient number, since it is larger than the sum of its proper divisors (158839379).

3301679646721 is a wasteful number, since it uses less digits than its factorization.

3301679646721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158839378.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 3301679646721 in words is "three trillion, three hundred one billion, six hundred seventy-nine million, six hundred forty-six thousand, seven hundred twenty-one".