40002338543 has 4 divisors (see below), whose sum is σ = 40599388440. Its totient is φ = 39405288648.

The previous prime is 40002338491. The next prime is 40002338591. The reversal of 40002338543 is 34583320004.

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 40002338543 - 2²⁰ = 40001289967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002338143) 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, 298524848 + ... + 298524981.

It is an arithmetic number, because the mean of its divisors is an integer number (10149847110).

Almost surely, 2^40002338543 is an apocalyptic number.

40002338543 is a deficient number, since it is larger than the sum of its proper divisors (597049897).

40002338543 is an equidigital number, since it uses as much as digits as its factorization.

40002338543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597049896.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 40002338543 its reverse (34583320004), we get a palindrome (74585658547).

The spelling of 40002338543 in words is "forty billion, two million, three hundred thirty-eight thousand, five hundred forty-three".