133506587807 has 4 divisors (see below), whose sum is σ = 135695220456. Its totient is φ = 131317955160.

The previous prime is 133506587783. The next prime is 133506587831. The reversal of 133506587807 is 708785605331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708785605331 = 194813 ⋅3638287.

It is an interprime number because it is at equal distance from previous prime (133506587783) and next prime (133506587831).

It is a cyclic number.

It is not a de Polignac number, because 133506587807 - 2¹⁰ = 133506586783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133506587887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094316233 + ... + 1094316354.

It is an arithmetic number, because the mean of its divisors is an integer number (33923805114).

Almost surely, 2^133506587807 is an apocalyptic number.

133506587807 is a deficient number, since it is larger than the sum of its proper divisors (2188632649).

133506587807 is an equidigital number, since it uses as much as digits as its factorization.

133506587807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188632648.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 133506587807 in words is "one hundred thirty-three billion, five hundred six million, five hundred eighty-seven thousand, eight hundred seven".