133028172587 has 4 divisors (see below), whose sum is σ = 133035056520. Its totient is φ = 133021288656.

The previous prime is 133028172569. The next prime is 133028172637. The reversal of 133028172587 is 785271820331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785271820331 = 12739 ⋅61643129.

It is a cyclic number.

It is not a de Polignac number, because 133028172587 - 2⁸ = 133028172331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133028172187) 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, 3412898 + ... + 3451655.

It is an arithmetic number, because the mean of its divisors is an integer number (33258764130).

Almost surely, 2^133028172587 is an apocalyptic number.

133028172587 is a deficient number, since it is larger than the sum of its proper divisors (6883933).

133028172587 is an equidigital number, since it uses as much as digits as its factorization.

133028172587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883932.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 133028172587 in words is "one hundred thirty-three billion, twenty-eight million, one hundred seventy-two thousand, five hundred eighty-seven".