1601104004571 has 4 divisors (see below), whose sum is σ = 2134805339432. Its totient is φ = 1067402669712.

The previous prime is 1601104004567. The next prime is 1601104004641. The reversal of 1601104004571 is 1754004011061.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1601104004571 - 2² = 1601104004567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601104004471) 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, 266850667426 + ... + 266850667431.

It is an arithmetic number, because the mean of its divisors is an integer number (533701334858).

Almost surely, 2^{1601104004571} is an apocalyptic number.

1601104004571 is a deficient number, since it is larger than the sum of its proper divisors (533701334861).

1601104004571 is an equidigital number, since it uses as much as digits as its factorization.

1601104004571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533701334860.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 1601104004571 in words is "one trillion, six hundred one billion, one hundred four million, four thousand, five hundred seventy-one".