3281664661823 has 4 divisors (see below), whose sum is σ = 3282100076640. Its totient is φ = 3281229247008.

The previous prime is 3281664661817. The next prime is 3281664661867.

3281664661823 is nontrivially palindromic in base 10.

3281664661823 is digitally balanced in base 3, 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 is a cyclic number.

It is not a de Polignac number, because 3281664661823 - 2⁸ = 3281664661567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281664661883) 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, 217696103 + ... + 217711176.

It is an arithmetic number, because the mean of its divisors is an integer number (820525019160).

Almost surely, 2^{3281664661823} is an apocalyptic number.

3281664661823 is a deficient number, since it is larger than the sum of its proper divisors (435414817).

3281664661823 is an equidigital number, since it uses as much as digits as its factorization.

3281664661823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435414816.

The product of its digits is 11943936, while the sum is 56.

The spelling of 3281664661823 in words is "three trillion, two hundred eighty-one billion, six hundred sixty-four million, six hundred sixty-one thousand, eight hundred twenty-three".