40505340055 has 4 divisors (see below), whose sum is σ = 48606408072. Its totient is φ = 32404272040.

The previous prime is 40505340041. The next prime is 40505340059. The reversal of 40505340055 is 55004350504.

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

It is not a de Polignac number, because 40505340055 - 2¹⁷ = 40505208983 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40505339999 and 40505340026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40505340059) 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 in 3 ways as a sum of consecutive naturals, for example, 4050534001 + ... + 4050534010.

It is an arithmetic number, because the mean of its divisors is an integer number (12151602018).

Almost surely, 2^40505340055 is an apocalyptic number.

40505340055 is a deficient number, since it is larger than the sum of its proper divisors (8101068017).

40505340055 is an equidigital number, since it uses as much as digits as its factorization.

40505340055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8101068016.

The product of its (nonzero) digits is 30000, while the sum is 31.

Adding to 40505340055 its reverse (55004350504), we get a palindrome (95509690559).

The spelling of 40505340055 in words is "forty billion, five hundred five million, three hundred forty thousand, fifty-five".