21433414244 has 24 divisors (see below), whose sum is σ = 40923078336. Its totient is φ = 9741332000.

The previous prime is 21433414237. The next prime is 21433414259. The reversal of 21433414244 is 44241433412.

It is a self number, because there is not a number n which added to its sum of digits gives 21433414244.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444854 + ... + 490674.

It is an arithmetic number, because the mean of its divisors is an integer number (1705128264).

Almost surely, 2^21433414244 is an apocalyptic number.

It is an amenable number.

21433414244 is a deficient number, since it is larger than the sum of its proper divisors (19489664092).

21433414244 is a wasteful number, since it uses less digits than its factorization.

21433414244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56467 (or 56465 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

Adding to 21433414244 its reverse (44241433412), we get a palindrome (65674847656).

The spelling of 21433414244 in words is "twenty-one billion, four hundred thirty-three million, four hundred fourteen thousand, two hundred forty-four".