40005548641 has 8 divisors (see below), whose sum is σ = 40422178944. Its totient is φ = 39589321200.

The previous prime is 40005548621. The next prime is 40005548677. The reversal of 40005548641 is 14684550004.

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 40005548641 - 2²³ = 39997160033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40005548641.

It is not an unprimeable number, because it can be changed into a prime (40005548621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101016 + ... + 300358.

It is an arithmetic number, because the mean of its divisors is an integer number (5052772368).

Almost surely, 2^40005548641 is an apocalyptic number.

It is an amenable number.

40005548641 is a deficient number, since it is larger than the sum of its proper divisors (416630303).

40005548641 is a wasteful number, since it uses less digits than its factorization.

40005548641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201431.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 40005548641 in words is "forty billion, five million, five hundred forty-eight thousand, six hundred forty-one".