3317507968421 has 2 divisors, whose sum is σ = 3317507968422. Its totient is φ = 3317507968420.

The previous prime is 3317507968399. The next prime is 3317507968597. The reversal of 3317507968421 is 1248697057133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2588755499521 + 728752468900 = 1608961^2 + 853670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3317507968421 is a prime.

It is a super-2 number, since 2×3317507968421² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3317507968121) 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 as a sum of consecutive naturals, namely, 1658753984210 + 1658753984211.

It is an arithmetic number, because the mean of its divisors is an integer number (1658753984211).

It is a 1-persistent number, because it is pandigital, but 2⋅3317507968421 = 6635015936842 is not.

Almost surely, 2^{3317507968421} is an apocalyptic number.

It is an amenable number.

3317507968421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3317507968421 is an equidigital number, since it uses as much as digits as its factorization.

3317507968421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 3317507968421 in words is "three trillion, three hundred seventeen billion, five hundred seven million, nine hundred sixty-eight thousand, four hundred twenty-one".