33505491317 has 2 divisors, whose sum is σ = 33505491318. Its totient is φ = 33505491316.

The previous prime is 33505491221. The next prime is 33505491343. The reversal of 33505491317 is 71319450533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19313772676 + 14191718641 = 138974^2 + 119129^2 .

It is an emirp because it is prime and its reverse (71319450533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33505491317 - 2²⁴ = 33488714101 is a prime.

It is a super-2 number, since 2×33505491317² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33505491367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16752745658 + 16752745659.

It is an arithmetic number, because the mean of its divisors is an integer number (16752745659).

Almost surely, 2^33505491317 is an apocalyptic number.

It is an amenable number.

33505491317 is a deficient number, since it is larger than the sum of its proper divisors (1).

33505491317 is an equidigital number, since it uses as much as digits as its factorization.

33505491317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 41.

The spelling of 33505491317 in words is "thirty-three billion, five hundred five million, four hundred ninety-one thousand, three hundred seventeen".