133869598609 has 2 divisors, whose sum is σ = 133869598610. Its totient is φ = 133869598608.

The previous prime is 133869598553. The next prime is 133869598721. The reversal of 133869598609 is 906895968331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95633707009 + 38235891600 = 309247^2 + 195540^2 .

It is an emirp because it is prime and its reverse (906895968331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133869598609 - 2³¹ = 131722114961 is a prime.

It is not a weakly prime, because it can be changed into another prime (133869598409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66934799304 + 66934799305.

It is an arithmetic number, because the mean of its divisors is an integer number (66934799305).

Almost surely, 2^133869598609 is an apocalyptic number.

It is an amenable number.

133869598609 is a deficient number, since it is larger than the sum of its proper divisors (1).

133869598609 is an equidigital number, since it uses as much as digits as its factorization.

133869598609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75582720, while the sum is 67.

The spelling of 133869598609 in words is "one hundred thirty-three billion, eight hundred sixty-nine million, five hundred ninety-eight thousand, six hundred nine".