133798506205 has 64 divisors (see below), whose sum is σ = 209545394688. Its totient is φ = 79589744640.

The previous prime is 133798506161. The next prime is 133798506229. The reversal of 133798506205 is 502605897331.

It is not a de Polignac number, because 133798506205 - 2¹¹ = 133798504157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5332369 + ... + 5357401.

It is an arithmetic number, because the mean of its divisors is an integer number (3274146792).

Almost surely, 2^133798506205 is an apocalyptic number.

It is an amenable number.

133798506205 is a deficient number, since it is larger than the sum of its proper divisors (75746888483).

133798506205 is a wasteful number, since it uses less digits than its factorization.

133798506205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25766.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 133798506205 in words is "one hundred thirty-three billion, seven hundred ninety-eight million, five hundred six thousand, two hundred five".