3209689644481 has 4 divisors (see below), whose sum is σ = 3238093977732. Its totient is φ = 3181285311232.

The previous prime is 3209689644409. The next prime is 3209689644523. The reversal of 3209689644481 is 1844469869023.

3209689644481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 18521849025 + 3191167795456 = 136095^2 + 1786384^2 .

It is a cyclic number.

It is not a de Polignac number, because 3209689644481 - 2⁷ = 3209689644353 is a prime.

It is a super-2 number, since 2×3209689644481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3209689644881) 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, 14202166456 + ... + 14202166681.

It is an arithmetic number, because the mean of its divisors is an integer number (809523494433).

Almost surely, 2^{3209689644481} is an apocalyptic number.

It is an amenable number.

3209689644481 is a deficient number, since it is larger than the sum of its proper divisors (28404333251).

3209689644481 is a wasteful number, since it uses less digits than its factorization.

3209689644481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28404333250.

The product of its (nonzero) digits is 71663616, while the sum is 64.

The spelling of 3209689644481 in words is "three trillion, two hundred nine billion, six hundred eighty-nine million, six hundred forty-four thousand, four hundred eighty-one".