21344241430 has 16 divisors (see below), whose sum is σ = 39458003760. Its totient is φ = 8306947872.

The previous prime is 21344241419. The next prime is 21344241433. The reversal of 21344241430 is 3414244312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344241433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28843200 + ... + 28843939.

It is an arithmetic number, because the mean of its divisors is an integer number (2466125235).

Almost surely, 2^21344241430 is an apocalyptic number.

21344241430 is a deficient number, since it is larger than the sum of its proper divisors (18113762330).

21344241430 is a wasteful number, since it uses less digits than its factorization.

21344241430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57687183.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21344241430 its reverse (3414244312), we get a palindrome (24758485742).

The spelling of 21344241430 in words is "twenty-one billion, three hundred forty-four million, two hundred forty-one thousand, four hundred thirty".