40020144343 has 4 divisors (see below), whose sum is σ = 40022520568. Its totient is φ = 40017768120.

The previous prime is 40020144341. The next prime is 40020144379. The reversal of 40020144343 is 34344102004.

40020144343 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 40020144343 - 2¹ = 40020144341 is a prime.

It is a super-2 number, since 2×40020144343² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020144341) 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, 1162668 + ... + 1196593.

It is an arithmetic number, because the mean of its divisors is an integer number (10005630142).

Almost surely, 2^40020144343 is an apocalyptic number.

40020144343 is a deficient number, since it is larger than the sum of its proper divisors (2376225).

40020144343 is a wasteful number, since it uses less digits than its factorization.

40020144343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376224.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 40020144343 its reverse (34344102004), we get a palindrome (74364246347).

The spelling of 40020144343 in words is "forty billion, twenty million, one hundred forty-four thousand, three hundred forty-three".