40443666043243 has 8 divisors (see below), whose sum is σ = 40456017183168. Its totient is φ = 40431316599744.

The previous prime is 40443666043219. The next prime is 40443666043321. The reversal of 40443666043243 is 34234066634404.

It is a happy number.

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 40443666043243 - 2¹³ = 40443666035051 is a prime.

It is a super-4 number, since 4×40443666043243⁴ (a number of 56 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40443666041243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48108705 + ... + 48942157.

It is an arithmetic number, because the mean of its divisors is an integer number (5057002147896).

Almost surely, 2^{40443666043243} is an apocalyptic number.

40443666043243 is a deficient number, since it is larger than the sum of its proper divisors (12351139925).

40443666043243 is an equidigital number, since it uses as much as digits as its factorization.

40443666043243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848213.

The product of its (nonzero) digits is 11943936, while the sum is 49.

The spelling of 40443666043243 in words is "forty trillion, four hundred forty-three billion, six hundred sixty-six million, forty-three thousand, two hundred forty-three".