3379663208921 has 4 divisors (see below), whose sum is σ = 3443430439332. Its totient is φ = 3315895978512.

The previous prime is 3379663208899. The next prime is 3379663208923. The reversal of 3379663208921 is 1298023669733.

It is a happy number.

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 2950369616896 + 429293592025 = 1717664^2 + 655205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3379663208921 - 2¹⁰ = 3379663207897 is a prime.

It is a super-2 number, since 2×3379663208921² (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 (3379663208923) 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, 31883615126 + ... + 31883615231.

It is an arithmetic number, because the mean of its divisors is an integer number (860857609833).

Almost surely, 2^{3379663208921} is an apocalyptic number.

It is an amenable number.

3379663208921 is a deficient number, since it is larger than the sum of its proper divisors (63767230411).

3379663208921 is an equidigital number, since it uses as much as digits as its factorization.

3379663208921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63767230410.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 3379663208921 in words is "three trillion, three hundred seventy-nine billion, six hundred sixty-three million, two hundred eight thousand, nine hundred twenty-one".