21433422004 has 6 divisors (see below), whose sum is σ = 37508488514. Its totient is φ = 10716711000.

The previous prime is 21433421983. The next prime is 21433422037. The reversal of 21433422004 is 40022433412.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18873264400 + 2560157604 = 137380^2 + 50598^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21433422004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2679177747 + ... + 2679177754.

Almost surely, 2^21433422004 is an apocalyptic number.

It is an amenable number.

21433422004 is a deficient number, since it is larger than the sum of its proper divisors (16075066510).

21433422004 is a wasteful number, since it uses less digits than its factorization.

21433422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358355505 (or 5358355503 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21433422004 its reverse (40022433412), we get a palindrome (61455855416).

The spelling of 21433422004 in words is "twenty-one billion, four hundred thirty-three million, four hundred twenty-two thousand, four".