40443315585 has 32 divisors (see below), whose sum is σ = 65101290240. Its totient is φ = 21439427328.

The previous prime is 40443315557. The next prime is 40443315599. The reversal of 40443315585 is 58551334404.

It is not a de Polignac number, because 40443315585 - 2⁸ = 40443315329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2096052 + ... + 2115258.

It is an arithmetic number, because the mean of its divisors is an integer number (2034415320).

Almost surely, 2^40443315585 is an apocalyptic number.

It is an amenable number.

40443315585 is a deficient number, since it is larger than the sum of its proper divisors (24657974655).

40443315585 is a wasteful number, since it uses less digits than its factorization.

40443315585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20057.

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 40443315585 its reverse (58551334404), we get a palindrome (98994649989).

The spelling of 40443315585 in words is "forty billion, four hundred forty-three million, three hundred fifteen thousand, five hundred eighty-five".