1605745045033 has 4 divisors (see below), whose sum is σ = 1690257942160. Its totient is φ = 1521232147908.

The previous prime is 1605745045019. The next prime is 1605745045049. The reversal of 1605745045033 is 3305405475061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1605745045033 - 2⁵ = 1605745045001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1605745045133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42256448535 + ... + 42256448572.

It is an arithmetic number, because the mean of its divisors is an integer number (422564485540).

Almost surely, 2^{1605745045033} is an apocalyptic number.

It is an amenable number.

1605745045033 is a deficient number, since it is larger than the sum of its proper divisors (84512897127).

1605745045033 is an equidigital number, since it uses as much as digits as its factorization.

1605745045033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84512897126.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 1605745045033 in words is "one trillion, six hundred five billion, seven hundred forty-five million, forty-five thousand, thirty-three".