1605040389223 has 16 divisors (see below), whose sum is σ = 1660900739904. Its totient is φ = 1549843096320.

The previous prime is 1605040389217. The next prime is 1605040389257. The reversal of 1605040389223 is 3229830405061.

It is a cyclic number.

It is not a de Polignac number, because 1605040389223 - 2²¹ = 1605038292071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1605040389223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605040389263) 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, 19611678 + ... + 19693348.

It is an arithmetic number, because the mean of its divisors is an integer number (103806296244).

Almost surely, 2^{1605040389223} is an apocalyptic number.

1605040389223 is a deficient number, since it is larger than the sum of its proper divisors (55860350681).

1605040389223 is a wasteful number, since it uses less digits than its factorization.

1605040389223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85722.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 1605040389223 in words is "one trillion, six hundred five billion, forty million, three hundred eighty-nine thousand, two hundred twenty-three".