21663343044062 has 8 divisors (see below), whose sum is σ = 32504769909192. Its totient is φ = 10828419741000.

The previous prime is 21663343044059. The next prime is 21663343044199. The reversal of 21663343044062 is 26044034336612.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625882189 + ... + 1625895512.

It is an arithmetic number, because the mean of its divisors is an integer number (4063096238649).

Almost surely, 2^{21663343044062} is an apocalyptic number.

21663343044062 is a deficient number, since it is larger than the sum of its proper divisors (10841426865130).

21663343044062 is a wasteful number, since it uses less digits than its factorization.

21663343044062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251781034.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 21663343044062 in words is "twenty-one trillion, six hundred sixty-three billion, three hundred forty-three million, forty-four thousand, sixty-two".