40001016443 has 4 divisors (see below), whose sum is σ = 40064410128. Its totient is φ = 39937622760.

The previous prime is 40001016409. The next prime is 40001016481. The reversal of 40001016443 is 34461010004.

40001016443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40001016443 - 2⁶ = 40001016379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40001016493) 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, 31695896 + ... + 31697157.

It is an arithmetic number, because the mean of its divisors is an integer number (10016102532).

Almost surely, 2^40001016443 is an apocalyptic number.

40001016443 is a deficient number, since it is larger than the sum of its proper divisors (63393685).

40001016443 is an equidigital number, since it uses as much as digits as its factorization.

40001016443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63393684.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 40001016443 its reverse (34461010004), we get a palindrome (74462026447).

The spelling of 40001016443 in words is "forty billion, one million, sixteen thousand, four hundred forty-three".