21835841744 has 10 divisors (see below), whose sum is σ = 42306943410. Its totient is φ = 10917920864.

The previous prime is 21835841639. The next prime is 21835841791. The reversal of 21835841744 is 44714853812.

It can be written as a sum of positive squares in only one way, i.e., 18972307600 + 2863534144 = 137740^2 + 53512^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682370039 + ... + 682370070.

It is an arithmetic number, because the mean of its divisors is an integer number (4230694341).

Almost surely, 2^21835841744 is an apocalyptic number.

It is an amenable number.

21835841744 is a deficient number, since it is larger than the sum of its proper divisors (20471101666).

21835841744 is a wasteful number, since it uses less digits than its factorization.

21835841744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364740117 (or 1364740111 counting only the distinct ones).

The product of its digits is 860160, while the sum is 47.

The spelling of 21835841744 in words is "twenty-one billion, eight hundred thirty-five million, eight hundred forty-one thousand, seven hundred forty-four".