133000209989 has 2 divisors, whose sum is σ = 133000209990. Its totient is φ = 133000209988.

The previous prime is 133000209967. The next prime is 133000210033. The reversal of 133000209989 is 989902000331.

It is an a-pointer prime, because the next prime (133000210033) can be obtained adding 133000209989 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67817013889 + 65183196100 = 260417^2 + 255310^2 .

It is a cyclic number.

It is not a de Polignac number, because 133000209989 - 2²⁸ = 132731774533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133000209959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66500104994 + 66500104995.

It is an arithmetic number, because the mean of its divisors is an integer number (66500104995).

Almost surely, 2^133000209989 is an apocalyptic number.

It is an amenable number.

133000209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

133000209989 is an equidigital number, since it uses as much as digits as its factorization.

133000209989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 133000209989 in words is "one hundred thirty-three billion, two hundred nine thousand, nine hundred eighty-nine".