21344034001430 has 16 divisors (see below), whose sum is σ = 43907727088800. Its totient is φ = 7317954514752.

The previous prime is 21344034001387. The next prime is 21344034001439. The reversal of 21344034001430 is 3410043044312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21344034001393 and 21344034001402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344034001439) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 152457385655 + ... + 152457385794.

It is an arithmetic number, because the mean of its divisors is an integer number (2744232943050).

Almost surely, 2^{21344034001430} is an apocalyptic number.

21344034001430 is an abundant number, since it is smaller than the sum of its proper divisors (22563693087370).

21344034001430 is a wasteful number, since it uses less digits than its factorization.

21344034001430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304914771463.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21344034001430 its reverse (3410043044312), we get a palindrome (24754077045742).

The spelling of 21344034001430 in words is "twenty-one trillion, three hundred forty-four billion, thirty-four million, one thousand, four hundred thirty".