21414643343206 has 8 divisors (see below), whose sum is σ = 32144287440960. Its totient is φ = 10699880862888.

The previous prime is 21414643343201. The next prime is 21414643343251. The reversal of 21414643343206 is 60234334641412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414643343201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3720400761 + ... + 3720406516.

It is an arithmetic number, because the mean of its divisors is an integer number (4018035930120).

Almost surely, 2^{21414643343206} is an apocalyptic number.

21414643343206 is a deficient number, since it is larger than the sum of its proper divisors (10729644097754).

21414643343206 is a wasteful number, since it uses less digits than its factorization.

21414643343206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7440808718.

The product of its (nonzero) digits is 995328, while the sum is 43.

Adding to 21414643343206 its reverse (60234334641412), we get a palindrome (81648977984618).

The spelling of 21414643343206 in words is "twenty-one trillion, four hundred fourteen billion, six hundred forty-three million, three hundred forty-three thousand, two hundred six".