21663226230503 has 32 divisors (see below), whose sum is σ = 25730004222720. Its totient is φ = 17979838652160.

The previous prime is 21663226230493. The next prime is 21663226230517. The reversal of 21663226230503 is 30503262236612.

It is not a de Polignac number, because 21663226230503 - 2⁴ = 21663226230487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21663226230523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8293388 + ... + 10588046.

It is an arithmetic number, because the mean of its divisors is an integer number (804062631960).

Almost surely, 2^{21663226230503} is an apocalyptic number.

21663226230503 is a deficient number, since it is larger than the sum of its proper divisors (4066777992217).

21663226230503 is a wasteful number, since it uses less digits than its factorization.

21663226230503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295407.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 21663226230503 in words is "twenty-one trillion, six hundred sixty-three billion, two hundred twenty-six million, two hundred thirty thousand, five hundred three".