30933218791669 has 2 divisors, whose sum is σ = 30933218791670. Its totient is φ = 30933218791668.

The previous prime is 30933218791639. The next prime is 30933218791759. The reversal of 30933218791669 is 96619781233903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29980716966225 + 952501825444 = 5475465^2 + 975962^2 .

It is an emirp because it is prime and its reverse (96619781233903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30933218791669 - 2¹³ = 30933218783477 is a prime.

It is a super-2 number, since 2×30933218791669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30933218791639) 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, 15466609395834 + 15466609395835.

It is an arithmetic number, because the mean of its divisors is an integer number (15466609395835).

Almost surely, 2^{30933218791669} is an apocalyptic number.

It is an amenable number.

30933218791669 is a deficient number, since it is larger than the sum of its proper divisors (1).

30933218791669 is an equidigital number, since it uses as much as digits as its factorization.

30933218791669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79361856, while the sum is 67.

The spelling of 30933218791669 in words is "thirty trillion, nine hundred thirty-three billion, two hundred eighteen million, seven hundred ninety-one thousand, six hundred sixty-nine".