13643512223 has 4 divisors (see below), whose sum is σ = 14883831528. Its totient is φ = 12403192920.

The previous prime is 13643512217. The next prime is 13643512249. The reversal of 13643512223 is 32221534631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13643512223 - 2⁶ = 13643512159 is a prime.

It is a super-2 number, since 2×13643512223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13643512223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643512123) 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, 620159636 + ... + 620159657.

It is an arithmetic number, because the mean of its divisors is an integer number (3720957882).

Almost surely, 2^13643512223 is an apocalyptic number.

13643512223 is a deficient number, since it is larger than the sum of its proper divisors (1240319305).

13643512223 is a wasteful number, since it uses less digits than its factorization.

13643512223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240319304.

The product of its digits is 25920, while the sum is 32.

The spelling of 13643512223 in words is "thirteen billion, six hundred forty-three million, five hundred twelve thousand, two hundred twenty-three".