43366421126550 has 192 divisors, whose sum is σ = 111708470468160. Its totient is φ = 11133645107200.

The previous prime is 43366421126549. The next prime is 43366421126599. The reversal of 43366421126550 is 5562112466334.

It is a super-2 number, since 2×43366421126550² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43366421126550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1291380760 + ... + 1291414340.

It is an arithmetic number, because the mean of its divisors is an integer number (581814950355).

Almost surely, 2^{43366421126550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43366421126550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55854235234080).

43366421126550 is an abundant number, since it is smaller than the sum of its proper divisors (68342049341610).

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

43366421126550 is a wasteful number, since it uses less digits than its factorization.

43366421126550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34036 (or 33973 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 43366421126550 in words is "forty-three trillion, three hundred sixty-six billion, four hundred twenty-one million, one hundred twenty-six thousand, five hundred fifty".