43396668643 has 4 divisors (see below), whose sum is σ = 43403610600. Its totient is φ = 43389726688.

The previous prime is 43396668613. The next prime is 43396668661. The reversal of 43396668643 is 34686669334.

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 43396668643 - 2⁹ = 43396668131 is a prime.

It is a super-2 number, since 2×43396668643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43396668613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3461593 + ... + 3474106.

It is an arithmetic number, because the mean of its divisors is an integer number (10850902650).

Almost surely, 2^43396668643 is an apocalyptic number.

43396668643 is a deficient number, since it is larger than the sum of its proper divisors (6941957).

43396668643 is an equidigital number, since it uses as much as digits as its factorization.

43396668643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941956.

The product of its digits is 40310784, while the sum is 58.

The spelling of 43396668643 in words is "forty-three billion, three hundred ninety-six million, six hundred sixty-eight thousand, six hundred forty-three".