40344342655 has 4 divisors (see below), whose sum is σ = 48413211192. Its totient is φ = 32275474120.

The previous prime is 40344342629. The next prime is 40344342671. The reversal of 40344342655 is 55624344304.

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

It is not a de Polignac number, because 40344342655 - 2¹¹ = 40344340607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4034434261 + ... + 4034434270.

It is an arithmetic number, because the mean of its divisors is an integer number (12103302798).

Almost surely, 2^40344342655 is an apocalyptic number.

40344342655 is a deficient number, since it is larger than the sum of its proper divisors (8068868537).

40344342655 is an equidigital number, since it uses as much as digits as its factorization.

40344342655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068868536.

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 40344342655 its reverse (55624344304), we get a palindrome (95968686959).

The spelling of 40344342655 in words is "forty billion, three hundred forty-four million, three hundred forty-two thousand, six hundred fifty-five".