1605536604044 has 12 divisors (see below), whose sum is σ = 2824247032824. Its totient is φ = 798608880384.

The previous prime is 1605536604031. The next prime is 1605536604053. The reversal of 1605536604044 is 4404066355061.

It is a junction number, because it is equal to n+sod(n) for n = 1605536603986 and 1605536604004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039854542 + ... + 1039856085.

It is an arithmetic number, because the mean of its divisors is an integer number (235353919402).

Almost surely, 2^{1605536604044} is an apocalyptic number.

It is an amenable number.

1605536604044 is a deficient number, since it is larger than the sum of its proper divisors (1218710428780).

1605536604044 is a wasteful number, since it uses less digits than its factorization.

1605536604044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079710824 (or 2079710822 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 1605536604044 in words is "one trillion, six hundred five billion, five hundred thirty-six million, six hundred four thousand, forty-four".