133606042605 has 96 divisors (see below), whose sum is σ = 269336441088. Its totient is φ = 60008832000.

The previous prime is 133606042597. The next prime is 133606042621. The reversal of 133606042605 is 506240606331.

133606042605 is a `hidden beast` number, since 1 + 3 + 3 + 6 + 0 + 6 + 0 + 42 + 605 = 666.

It is not a de Polignac number, because 133606042605 - 2³ = 133606042597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133606042605.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4151737 + ... + 4183793.

It is an arithmetic number, because the mean of its divisors is an integer number (2805587928).

Almost surely, 2^133606042605 is an apocalyptic number.

133606042605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133606042605 is an abundant number, since it is smaller than the sum of its proper divisors (135730398483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133606042605 is a wasteful number, since it uses less digits than its factorization.

133606042605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32307 (or 32304 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 133606042605 its reverse (506240606331), we get a palindrome (639846648936).

The spelling of 133606042605 in words is "one hundred thirty-three billion, six hundred six million, forty-two thousand, six hundred five".