13643420609 has 16 divisors (see below), whose sum is σ = 16811061120. Its totient is φ = 10782478080.

The previous prime is 13643420579. The next prime is 13643420617. The reversal of 13643420609 is 90602434631.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13643420609 - 2¹² = 13643416513 is a prime.

It is a super-2 number, since 2×13643420609² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13643420689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4919 + ... + 165260.

It is an arithmetic number, because the mean of its divisors is an integer number (1050691320).

Almost surely, 2^13643420609 is an apocalyptic number.

It is an amenable number.

13643420609 is a deficient number, since it is larger than the sum of its proper divisors (3167640511).

13643420609 is a wasteful number, since it uses less digits than its factorization.

13643420609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171080.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 13643420609 in words is "thirteen billion, six hundred forty-three million, four hundred twenty thousand, six hundred nine".