13066208643 has 4 divisors (see below), whose sum is σ = 17421611528. Its totient is φ = 8710805760.

The previous prime is 13066208611. The next prime is 13066208657. The reversal of 13066208643 is 34680266031.

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

It is not a de Polignac number, because 13066208643 - 2⁵ = 13066208611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13066208543) 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, 2177701438 + ... + 2177701443.

It is an arithmetic number, because the mean of its divisors is an integer number (4355402882).

Almost surely, 2^13066208643 is an apocalyptic number.

13066208643 is a deficient number, since it is larger than the sum of its proper divisors (4355402885).

13066208643 is an equidigital number, since it uses as much as digits as its factorization.

13066208643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355402884.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 13066208643 in words is "thirteen billion, sixty-six million, two hundred eight thousand, six hundred forty-three".