3325281994661 has 4 divisors (see below), whose sum is σ = 3627580357824. Its totient is φ = 3022983631500.

The previous prime is 3325281994589. The next prime is 3325281994679. The reversal of 3325281994661 is 1664991825233.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3325281994661 is a prime.

It is a super-2 number, since 2×3325281994661² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3325281994661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3325281994361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151149181565 + ... + 151149181586.

It is an arithmetic number, because the mean of its divisors is an integer number (906895089456).

Almost surely, 2^{3325281994661} is an apocalyptic number.

It is an amenable number.

3325281994661 is a deficient number, since it is larger than the sum of its proper divisors (302298363163).

3325281994661 is a wasteful number, since it uses less digits than its factorization.

3325281994661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302298363162.

The product of its digits is 16796160, while the sum is 59.

The spelling of 3325281994661 in words is "three trillion, three hundred twenty-five billion, two hundred eighty-one million, nine hundred ninety-four thousand, six hundred sixty-one".