133121233462566 has 8 divisors (see below), whose sum is σ = 266242466925144. Its totient is φ = 44373744487520.

The previous prime is 133121233462519. The next prime is 133121233462579. The reversal of 133121233462566 is 665264332121331.

It is a sphenic number, since it is the product of 3 distinct primes.

133121233462566 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 11093436121875 + ... + 11093436121886.

It is an arithmetic number, because the mean of its divisors is an integer number (33280308365643).

Almost surely, 2^{133121233462566} is an apocalyptic number.

133121233462566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

133121233462566 is a wasteful number, since it uses less digits than its factorization.

133121233462566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186872243766.

The product of its digits is 2799360, while the sum is 48.

Adding to 133121233462566 its reverse (665264332121331), we get a palindrome (798385565583897).

The spelling of 133121233462566 in words is "one hundred thirty-three trillion, one hundred twenty-one billion, two hundred thirty-three million, four hundred sixty-two thousand, five hundred sixty-six".