12143566643 has 8 divisors (see below), whose sum is σ = 13292076336. Its totient is φ = 11025684000.

The previous prime is 12143566619. The next prime is 12143566651. The reversal of 12143566643 is 34666534121.

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

It is a cyclic number.

It is not a de Polignac number, because 12143566643 - 2³⁰ = 11069824819 is a prime.

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 12143566643.

It is not an unprimeable number, because it can be changed into a prime (12143566663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7655933 + ... + 7657518.

It is an arithmetic number, because the mean of its divisors is an integer number (1661509542).

Almost surely, 2^12143566643 is an apocalyptic number.

12143566643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12143566643 is a deficient number, since it is larger than the sum of its proper divisors (1148509693).

12143566643 is a wasteful number, since it uses less digits than its factorization.

12143566643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313525.

The product of its digits is 311040, while the sum is 41.

The spelling of 12143566643 in words is "twelve billion, one hundred forty-three million, five hundred sixty-six thousand, six hundred forty-three".