40643030561 has 8 divisors (see below), whose sum is σ = 47008807104. Its totient is φ = 34417161360.

The previous prime is 40643030521. The next prime is 40643030627. The reversal of 40643030561 is 16503034604.

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 40643030561 - 2⁶ = 40643030497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40643030521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34976210 + ... + 34977371.

It is an arithmetic number, because the mean of its divisors is an integer number (5876100888).

Almost surely, 2^40643030561 is an apocalyptic number.

It is an amenable number.

40643030561 is a deficient number, since it is larger than the sum of its proper divisors (6365776543).

40643030561 is an equidigital number, since it uses as much as digits as its factorization.

40643030561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69953671.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 40643030561 in words is "forty billion, six hundred forty-three million, thirty thousand, five hundred sixty-one".