13226665623 has 8 divisors (see below), whose sum is σ = 18204443136. Its totient is φ = 8533332600.

The previous prime is 13226665589. The next prime is 13226665631. The reversal of 13226665623 is 32656662231.

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

It is not a de Polignac number, because 13226665623 - 2¹² = 13226661527 is a prime.

It is a super-3 number, since 3×13226665623³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13226665633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71111013 + ... + 71111198.

It is an arithmetic number, because the mean of its divisors is an integer number (2275555392).

Almost surely, 2^13226665623 is an apocalyptic number.

13226665623 is a deficient number, since it is larger than the sum of its proper divisors (4977777513).

13226665623 is a wasteful number, since it uses less digits than its factorization.

13226665623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142222245.

The product of its digits is 466560, while the sum is 42.

The spelling of 13226665623 in words is "thirteen billion, two hundred twenty-six million, six hundred sixty-five thousand, six hundred twenty-three".