133128168285 has 16 divisors (see below), whose sum is σ = 243434365056. Its totient is φ = 60858591168.

The previous prime is 133128168263. The next prime is 133128168289. The reversal of 133128168285 is 582861821331.

It is not a de Polignac number, because 133128168285 - 2⁸ = 133128168029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133128168289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633943554 + ... + 633943763.

It is an arithmetic number, because the mean of its divisors is an integer number (15214647816).

Almost surely, 2^133128168285 is an apocalyptic number.

133128168285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133128168285 is a deficient number, since it is larger than the sum of its proper divisors (110306196771).

133128168285 is a wasteful number, since it uses less digits than its factorization.

133128168285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267887332.

The product of its digits is 552960, while the sum is 48.

The spelling of 133128168285 in words is "one hundred thirty-three billion, one hundred twenty-eight million, one hundred sixty-eight thousand, two hundred eighty-five".