40544130643 has 4 divisors (see below), whose sum is σ = 40560949368. Its totient is φ = 40527311920.

The previous prime is 40544130631. The next prime is 40544130661. The reversal of 40544130643 is 34603144504.

40544130643 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 is a cyclic number.

It is not a de Polignac number, because 40544130643 - 2¹⁷ = 40543999571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40544130599 and 40544130608.

It is not an unprimeable number, because it can be changed into a prime (40544134643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8405746 + ... + 8410567.

It is an arithmetic number, because the mean of its divisors is an integer number (10140237342).

Almost surely, 2^40544130643 is an apocalyptic number.

40544130643 is a deficient number, since it is larger than the sum of its proper divisors (16818725).

40544130643 is a wasteful number, since it uses less digits than its factorization.

40544130643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16818724.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 40544130643 in words is "forty billion, five hundred forty-four million, one hundred thirty thousand, six hundred forty-three".