133198568669 has 2 divisors, whose sum is σ = 133198568670. Its totient is φ = 133198568668.

The previous prime is 133198568663. The next prime is 133198568687. The reversal of 133198568669 is 966865891331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72569355769 + 60629212900 = 269387^2 + 246230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133198568669 is a prime.

It is a super-2 number, since 2×133198568669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133198568663) 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, 66599284334 + 66599284335.

It is an arithmetic number, because the mean of its divisors is an integer number (66599284335).

Almost surely, 2^133198568669 is an apocalyptic number.

It is an amenable number.

133198568669 is a deficient number, since it is larger than the sum of its proper divisors (1).

133198568669 is an equidigital number, since it uses as much as digits as its factorization.

133198568669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50388480, while the sum is 65.

The spelling of 133198568669 in words is "one hundred thirty-three billion, one hundred ninety-eight million, five hundred sixty-eight thousand, six hundred sixty-nine".