21663226230502 has 8 divisors (see below), whose sum is σ = 32494859209800. Its totient is φ = 10831606493904.

The previous prime is 21663226230493. The next prime is 21663226230517. The reversal of 21663226230502 is 20503262236612.

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 pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4068274 + ... + 7738042.

It is an arithmetic number, because the mean of its divisors is an integer number (4061857401225).

Almost surely, 2^{21663226230502} is an apocalyptic number.

21663226230502 is a deficient number, since it is larger than the sum of its proper divisors (10831632979298).

21663226230502 is a wasteful number, since it uses less digits than its factorization.

21663226230502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6621350.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 21663226230502 in words is "twenty-one trillion, six hundred sixty-three billion, two hundred twenty-six million, two hundred thirty thousand, five hundred two".