21034334432 has 24 divisors (see below), whose sum is σ = 41416288200. Its totient is φ = 10515912064.

The previous prime is 21034334423. The next prime is 21034334441. The reversal of 21034334432 is 23443343012.

It is an interprime number because it is at equal distance from previous prime (21034334423) and next prime (21034334441).

It is a junction number, because it is equal to n+sod(n) for n = 21034334395 and 21034334404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270794 + ... + 339702.

It is an arithmetic number, because the mean of its divisors is an integer number (1725678675).

Almost surely, 2^21034334432 is an apocalyptic number.

It is an amenable number.

21034334432 is a deficient number, since it is larger than the sum of its proper divisors (20381953768).

21034334432 is an equidigital number, since it uses as much as digits as its factorization.

21034334432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78458 (or 78450 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 21034334432 its reverse (23443343012), we get a palindrome (44477677444).

The spelling of 21034334432 in words is "twenty-one billion, thirty-four million, three hundred thirty-four thousand, four hundred thirty-two".