133166236155255 has 128 divisors (see below), whose sum is σ = 243200547394560. Its totient is φ = 69980033866752.

The previous prime is 133166236155247. The next prime is 133166236155287. The reversal of 133166236155255 is 552551632661331.

133166236155255 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 6 + 6 + 2 + 36 + 1 + 552 + 55 = 666.

It is not a de Polignac number, because 133166236155255 - 2³ = 133166236155247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 240501232 + ... + 241054298.

It is an arithmetic number, because the mean of its divisors is an integer number (1900004276520).

Almost surely, 2^{133166236155255} is an apocalyptic number.

133166236155255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133166236155255 is a deficient number, since it is larger than the sum of its proper divisors (110034311239305).

133166236155255 is an frugal number, since it uses more digits than its factorization.

133166236155255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553417 (or 553399 counting only the distinct ones).

The product of its digits is 14580000, while the sum is 54.

The spelling of 133166236155255 in words is "one hundred thirty-three trillion, one hundred sixty-six billion, two hundred thirty-six million, one hundred fifty-five thousand, two hundred fifty-five".