40540417685 has 8 divisors (see below), whose sum is σ = 48866657280. Its totient is φ = 32286896784.

The previous prime is 40540417681. The next prime is 40540417717. The reversal of 40540417685 is 58671404504.

40540417685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40540417685 - 2² = 40540417681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540417681) 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, 18178445 + ... + 18180674.

It is an arithmetic number, because the mean of its divisors is an integer number (6108332160).

Almost surely, 2^40540417685 is an apocalyptic number.

It is an amenable number.

40540417685 is a deficient number, since it is larger than the sum of its proper divisors (8326239595).

40540417685 is a wasteful number, since it uses less digits than its factorization.

40540417685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36359347.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 40540417685 in words is "forty billion, five hundred forty million, four hundred seventeen thousand, six hundred eighty-five".