43890381464922 has 32 divisors (see below), whose sum is σ = 97543859212800. Its totient is φ = 14628675428064.

The previous prime is 43890381464893. The next prime is 43890381464927. The reversal of 43890381464922 is 22946418309834.

43890381464922 is a `hidden beast` number, since 4 + 3 + 8 + 9 + 0 + 3 + 81 + 464 + 92 + 2 = 666.

43890381464922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 43890381464922.

It is not an unprimeable number, because it can be changed into a prime (43890381464927) 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 15 ways as a sum of consecutive naturals, for example, 39776443 + ... + 40864974.

It is an arithmetic number, because the mean of its divisors is an integer number (3048245600400).

Almost surely, 2^{43890381464922} is an apocalyptic number.

43890381464922 is an abundant number, since it is smaller than the sum of its proper divisors (53653477747878).

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

43890381464922 is a wasteful number, since it uses less digits than its factorization.

43890381464922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80651507 (or 80651501 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 43890381464922 in words is "forty-three trillion, eight hundred ninety billion, three hundred eighty-one million, four hundred sixty-four thousand, nine hundred twenty-two".