331664341621 has 8 divisors (see below), whose sum is σ = 337989945600. Its totient is φ = 325362210240.

The previous prime is 331664341573. The next prime is 331664341627. The reversal of 331664341621 is 126143466133.

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

It is a cyclic number.

It is not a de Polignac number, because 331664341621 - 2⁷ = 331664341493 is a prime.

It is a super-2 number, since 2×331664341621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331664341627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5839620 + ... + 5896141.

It is an arithmetic number, because the mean of its divisors is an integer number (42248743200).

Almost surely, 2^331664341621 is an apocalyptic number.

It is an amenable number.

331664341621 is a deficient number, since it is larger than the sum of its proper divisors (6325603979).

331664341621 is a wasteful number, since it uses less digits than its factorization.

331664341621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11736299.

The product of its digits is 186624, while the sum is 40.

The spelling of 331664341621 in words is "three hundred thirty-one billion, six hundred sixty-four million, three hundred forty-one thousand, six hundred twenty-one".