40235070545665 has 4 divisors (see below), whose sum is σ = 48282084654804. Its totient is φ = 32188056436528.

The previous prime is 40235070545653. The next prime is 40235070545669. The reversal of 40235070545665 is 56654507053204.

40235070545665 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 can be written as a sum of positive squares in 2 ways, for example, as 29162494853361 + 11072575692304 = 5400231^2 + 3327548^2 .

It is a cyclic number.

It is not a de Polignac number, because 40235070545665 - 2⁵ = 40235070545633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40235070545669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4023507054562 + ... + 4023507054571.

It is an arithmetic number, because the mean of its divisors is an integer number (12070521163701).

Almost surely, 2^{40235070545665} is an apocalyptic number.

It is an amenable number.

40235070545665 is a deficient number, since it is larger than the sum of its proper divisors (8047014109139).

40235070545665 is an equidigital number, since it uses as much as digits as its factorization.

40235070545665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8047014109138.

The product of its (nonzero) digits is 15120000, while the sum is 52.

Adding to 40235070545665 its reverse (56654507053204), we get a palindrome (96889577598869).

The spelling of 40235070545665 in words is "forty trillion, two hundred thirty-five billion, seventy million, five hundred forty-five thousand, six hundred sixty-five".