133587389609 has 4 divisors (see below), whose sum is σ = 133612932480. Its totient is φ = 133561846740.

The previous prime is 133587389567. The next prime is 133587389633. The reversal of 133587389609 is 906983785331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133587389609 - 2²⁴ = 133570612393 is a prime.

It is a super-2 number, since 2×133587389609² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133587379609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12763589 + ... + 12774050.

It is an arithmetic number, because the mean of its divisors is an integer number (33403233120).

Almost surely, 2^133587389609 is an apocalyptic number.

It is an amenable number.

133587389609 is a deficient number, since it is larger than the sum of its proper divisors (25542871).

133587389609 is an equidigital number, since it uses as much as digits as its factorization.

133587389609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25542870.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 133587389609 in words is "one hundred thirty-three billion, five hundred eighty-seven million, three hundred eighty-nine thousand, six hundred nine".