3317621816356 has 81 divisors (see below), whose sum is σ = 5994844718961. Its totient is φ = 1606504788000.

The previous prime is 3317621816339. The next prime is 3317621816359. The reversal of 3317621816356 is 6536181267133.

It is a happy number.

The square root of 3317621816356 is 1821434.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3187531753956 + 130090062400 = 1785366^2 + 360680^2 .

It is a super-3 number, since 3×3317621816356³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3317621816359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26123006365 + ... + 26123006491.

Almost surely, 2^{3317621816356} is an apocalyptic number.

3317621816356 is the 1821434-th square number.

It is an amenable number.

3317621816356 is a deficient number, since it is larger than the sum of its proper divisors (2677222902605).

3317621816356 is an equidigital number, since it uses as much as digits as its factorization.

3317621816356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 301 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 3317621816356 in words is "three trillion, three hundred seventeen billion, six hundred twenty-one million, eight hundred sixteen thousand, three hundred fifty-six".