405605500643 has 16 divisors (see below), whose sum is σ = 473802639360. Its totient is φ = 339983947296.

The previous prime is 405605500637. The next prime is 405605500669. The reversal of 405605500643 is 346005506504.

It is a happy number.

It is not a de Polignac number, because 405605500643 - 2⁴ = 405605500627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405605500597 and 405605500606.

It is not an unprimeable number, because it can be changed into a prime (405605500633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109103 + ... + 907256.

It is an arithmetic number, because the mean of its divisors is an integer number (29612664960).

Almost surely, 2^405605500643 is an apocalyptic number.

405605500643 is a deficient number, since it is larger than the sum of its proper divisors (68197138717).

405605500643 is a wasteful number, since it uses less digits than its factorization.

405605500643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017626.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 405605500643 in words is "four hundred five billion, six hundred five million, five hundred thousand, six hundred forty-three".