20421000410444 has 48 divisors (see below), whose sum is σ = 37901613824256. Its totient is φ = 9610252646400.

The previous prime is 20421000410411. The next prime is 20421000410467. The reversal of 20421000410444 is 44401400012402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10683572 + ... + 12449124.

It is an arithmetic number, because the mean of its divisors is an integer number (789616954672).

Almost surely, 2^{20421000410444} is an apocalyptic number.

It is an amenable number.

20421000410444 is a deficient number, since it is larger than the sum of its proper divisors (17480613413812).

20421000410444 is a wasteful number, since it uses less digits than its factorization.

20421000410444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768146 (or 1768144 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 20421000410444 its reverse (44401400012402), we get a palindrome (64822400422846).

The spelling of 20421000410444 in words is "twenty trillion, four hundred twenty-one billion, four hundred ten thousand, four hundred forty-four".