21885342333844 has 24 divisors (see below), whose sum is σ = 41838578728128. Its totient is φ = 9934199394240.

The previous prime is 21885342333793. The next prime is 21885342333887. The reversal of 21885342333844 is 44833324358812.

It is a happy number.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 342054769 + ... + 342118744.

It is an arithmetic number, because the mean of its divisors is an integer number (1743274113672).

Almost surely, 2^{21885342333844} is an apocalyptic number.

It is an amenable number.

21885342333844 is a deficient number, since it is larger than the sum of its proper divisors (19953236394284).

21885342333844 is a wasteful number, since it uses less digits than its factorization.

21885342333844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684174255 (or 684174253 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 58.

The spelling of 21885342333844 in words is "twenty-one trillion, eight hundred eighty-five billion, three hundred forty-two million, three hundred thirty-three thousand, eight hundred forty-four".