40036321443 has 4 divisors (see below), whose sum is σ = 53381761928. Its totient is φ = 26690880960.

The previous prime is 40036321399. The next prime is 40036321487. The reversal of 40036321443 is 34412363004.

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

It is an interprime number because it is at equal distance from previous prime (40036321399) and next prime (40036321487).

It is not a de Polignac number, because 40036321443 - 2⁹ = 40036320931 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 40036321443.

It is not an unprimeable number, because it can be changed into a prime (40036321243) 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, 6672720238 + ... + 6672720243.

It is an arithmetic number, because the mean of its divisors is an integer number (13345440482).

Almost surely, 2^40036321443 is an apocalyptic number.

40036321443 is a deficient number, since it is larger than the sum of its proper divisors (13345440485).

40036321443 is a wasteful number, since it uses less digits than its factorization.

40036321443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13345440484.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 40036321443 its reverse (34412363004), we get a palindrome (74448684447).

The spelling of 40036321443 in words is "forty billion, thirty-six million, three hundred twenty-one thousand, four hundred forty-three".