40340355653 has 8 divisors (see below), whose sum is σ = 43445141208. Its totient is φ = 37235810304.

The previous prime is 40340355617. The next prime is 40340355667. The reversal of 40340355653 is 35655304304.

40340355653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6461764 + 40333893889 = 2542^2 + 200833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40340355653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340355673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448001 + ... + 530457.

It is an arithmetic number, because the mean of its divisors is an integer number (5430642651).

Almost surely, 2^40340355653 is an apocalyptic number.

It is an amenable number.

40340355653 is a deficient number, since it is larger than the sum of its proper divisors (3104785555).

40340355653 is a wasteful number, since it uses less digits than its factorization.

40340355653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120103.

The product of its (nonzero) digits is 324000, while the sum is 38.

Adding to 40340355653 its reverse (35655304304), we get a palindrome (75995659957).

The spelling of 40340355653 in words is "forty billion, three hundred forty million, three hundred fifty-five thousand, six hundred fifty-three".