1605663411244 has 48 divisors (see below), whose sum is σ = 3034307666880. Its totient is φ = 741833890560.

The previous prime is 1605663411223. The next prime is 1605663411259. The reversal of 1605663411244 is 4421143665061.

It is a self number, because there is not a number n which added to its sum of digits gives 1605663411244.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2804632 + ... + 3328255.

It is an arithmetic number, because the mean of its divisors is an integer number (63214743060).

Almost surely, 2^{1605663411244} is an apocalyptic number.

It is an amenable number.

1605663411244 is a deficient number, since it is larger than the sum of its proper divisors (1428644255636).

1605663411244 is a wasteful number, since it uses less digits than its factorization.

1605663411244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133018 (or 6133016 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 1605663411244 in words is "one trillion, six hundred five billion, six hundred sixty-three million, four hundred eleven thousand, two hundred forty-four".