405585009647 has 8 divisors (see below), whose sum is σ = 407335661376. Its totient is φ = 403836419232.

The previous prime is 405585009601. The next prime is 405585009667. The reversal of 405585009647 is 746900585504.

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 405585009647 - 2¹⁶ = 405584944111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405585009667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120308 + ... + 908649.

It is an arithmetic number, because the mean of its divisors is an integer number (50916957672).

Almost surely, 2^405585009647 is an apocalyptic number.

405585009647 is a deficient number, since it is larger than the sum of its proper divisors (1750651729).

405585009647 is a wasteful number, since it uses less digits than its factorization.

405585009647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030657.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 405585009647 in words is "four hundred five billion, five hundred eighty-five million, nine thousand, six hundred forty-seven".