21343163626 has 8 divisors (see below), whose sum is σ = 32080485600. Its totient is φ = 10649668428.

The previous prime is 21343163623. The next prime is 21343163663. The reversal of 21343163626 is 62636134312.

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

It is not an unprimeable number, because it can be changed into a prime (21343163623) 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, 10955476 + ... + 10957423.

It is an arithmetic number, because the mean of its divisors is an integer number (4010060700).

Almost surely, 2^21343163626 is an apocalyptic number.

21343163626 is a deficient number, since it is larger than the sum of its proper divisors (10737321974).

21343163626 is a wasteful number, since it uses less digits than its factorization.

21343163626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21913388.

The product of its digits is 93312, while the sum is 37.

Adding to 21343163626 its reverse (62636134312), we get a palindrome (83979297938).

The spelling of 21343163626 in words is "twenty-one billion, three hundred forty-three million, one hundred sixty-three thousand, six hundred twenty-six".