40000564565 has 8 divisors (see below), whose sum is σ = 51693037368. Its totient is φ = 29538878400.

The previous prime is 40000564529. The next prime is 40000564573. The reversal of 40000564565 is 56546500004.

It can be written as a sum of positive squares in 4 ways, for example, as 2628715441 + 37371849124 = 51271^2 + 193318^2 .

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

It is not a de Polignac number, because 40000564565 - 2¹⁶ = 40000499029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307696586 + ... + 307696715.

It is an arithmetic number, because the mean of its divisors is an integer number (6461629671).

Almost surely, 2^40000564565 is an apocalyptic number.

It is an amenable number.

40000564565 is a deficient number, since it is larger than the sum of its proper divisors (11692472803).

40000564565 is a wasteful number, since it uses less digits than its factorization.

40000564565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615393319.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 40000564565 in words is "forty billion, five hundred sixty-four thousand, five hundred sixty-five".