133121623066550 has 24 divisors (see below), whose sum is σ = 247608438068016. Its totient is φ = 53248171987040.

The previous prime is 133121623066511. The next prime is 133121623066559. The reversal of 133121623066550 is 55660326121331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133121623066559) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6269789 + ... + 17480088.

It is an arithmetic number, because the mean of its divisors is an integer number (10317018252834).

Almost surely, 2^{133121623066550} is an apocalyptic number.

133121623066550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133121623066550 is a deficient number, since it is larger than the sum of its proper divisors (114486815001466).

133121623066550 is a wasteful number, since it uses less digits than its factorization.

133121623066550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23861992 (or 23861987 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 44.

Adding to 133121623066550 its reverse (55660326121331), we get a palindrome (188781949187881).

The spelling of 133121623066550 in words is "one hundred thirty-three trillion, one hundred twenty-one billion, six hundred twenty-three million, sixty-six thousand, five hundred fifty".