40540405043 has 2 divisors, whose sum is σ = 40540405044. Its totient is φ = 40540405042.

The previous prime is 40540405039. The next prime is 40540405123. The reversal of 40540405043 is 34050404504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40540405043 - 2² = 40540405039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40540404997 and 40540405015.

It is not a weakly prime, because it can be changed into another prime (40540405343) 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 as a sum of consecutive naturals, namely, 20270202521 + 20270202522.

It is an arithmetic number, because the mean of its divisors is an integer number (20270202522).

Almost surely, 2^40540405043 is an apocalyptic number.

40540405043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40540405043 is an equidigital number, since it uses as much as digits as its factorization.

40540405043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 40540405043 its reverse (34050404504), we get a palindrome (74590809547).

The spelling of 40540405043 in words is "forty billion, five hundred forty million, four hundred five thousand, forty-three".