13643426135663 has 16 divisors (see below), whose sum is σ = 14323521945600. Its totient is φ = 12970590331776.

The previous prime is 13643426135659. The next prime is 13643426135671. The reversal of 13643426135663 is 36653162434631.

It is a cyclic number.

It is not a de Polignac number, because 13643426135663 - 2² = 13643426135659 is a prime.

It is a super-2 number, since 2×13643426135663² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643426135693) 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, 33788306 + ... + 34189712.

It is an arithmetic number, because the mean of its divisors is an integer number (895220121600).

Almost surely, 2^{13643426135663} is an apocalyptic number.

13643426135663 is a deficient number, since it is larger than the sum of its proper divisors (680095809937).

13643426135663 is a wasteful number, since it uses less digits than its factorization.

13643426135663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410446.

The product of its digits is 16796160, while the sum is 53.

The spelling of 13643426135663 in words is "thirteen trillion, six hundred forty-three billion, four hundred twenty-six million, one hundred thirty-five thousand, six hundred sixty-three".