33664220669 has 2 divisors, whose sum is σ = 33664220670. Its totient is φ = 33664220668.

The previous prime is 33664220659. The next prime is 33664220677. The reversal of 33664220669 is 96602246633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32455824025 + 1208396644 = 180155^2 + 34762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33664220669 is a prime.

It is a super-2 number, since 2×33664220669² (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 (33664220659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16832110334 + 16832110335.

It is an arithmetic number, because the mean of its divisors is an integer number (16832110335).

Almost surely, 2^33664220669 is an apocalyptic number.

It is an amenable number.

33664220669 is a deficient number, since it is larger than the sum of its proper divisors (1).

33664220669 is an equidigital number, since it uses as much as digits as its factorization.

33664220669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 47.

The spelling of 33664220669 in words is "thirty-three billion, six hundred sixty-four million, two hundred twenty thousand, six hundred sixty-nine".