21344000432 has 20 divisors (see below), whose sum is σ = 41375454480. Its totient is φ = 10666463808.

The previous prime is 21344000411. The next prime is 21344000453. The reversal of 21344000432 is 23400044312.

It is an interprime number because it is at equal distance from previous prime (21344000411) and next prime (21344000453).

It is a junction number, because it is equal to n+sod(n) for n = 21344000398 and 21344000407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314132 + ... + 375987.

It is an arithmetic number, because the mean of its divisors is an integer number (2068772724).

Almost surely, 2^21344000432 is an apocalyptic number.

It is an amenable number.

21344000432 is a deficient number, since it is larger than the sum of its proper divisors (20031454048).

21344000432 is a wasteful number, since it uses less digits than its factorization.

21344000432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692060 (or 692054 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21344000432 its reverse (23400044312), we get a palindrome (44744044744).

The spelling of 21344000432 in words is "twenty-one billion, three hundred forty-four million, four hundred thirty-two", and thus it is an aban number.