21410431144 has 16 divisors (see below), whose sum is σ = 40460659200. Its totient is φ = 10620922032.

The previous prime is 21410431127. The next prime is 21410431157. The reversal of 21410431144 is 44113401412.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10535614 + ... + 10537645.

It is an arithmetic number, because the mean of its divisors is an integer number (2528791200).

Almost surely, 2^21410431144 is an apocalyptic number.

It is an amenable number.

21410431144 is a deficient number, since it is larger than the sum of its proper divisors (19050228056).

21410431144 is a wasteful number, since it uses less digits than its factorization.

21410431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21073392 (or 21073388 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21410431144 its reverse (44113401412), we get a palindrome (65523832556).

The spelling of 21410431144 in words is "twenty-one billion, four hundred ten million, four hundred thirty-one thousand, one hundred forty-four".