21443143414 has 16 divisors (see below), whose sum is σ = 40101463296. Its totient is φ = 8354471400.

The previous prime is 21443143361. The next prime is 21443143417. The reversal of 21443143414 is 41434134412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21443143417) 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, 69620442 + ... + 69620749.

It is an arithmetic number, because the mean of its divisors is an integer number (2506341456).

Almost surely, 2^21443143414 is an apocalyptic number.

21443143414 is a deficient number, since it is larger than the sum of its proper divisors (18658319882).

21443143414 is a wasteful number, since it uses less digits than its factorization.

21443143414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139241211.

The product of its digits is 18432, while the sum is 31.

Adding to 21443143414 its reverse (41434134412), we get a palindrome (62877277826).

The spelling of 21443143414 in words is "twenty-one billion, four hundred forty-three million, one hundred forty-three thousand, four hundred fourteen".