1604473845905 has 64 divisors (see below), whose sum is σ = 2347224998400. Its totient is φ = 1027783987200.

The previous prime is 1604473845857. The next prime is 1604473845983. The reversal of 1604473845905 is 5095483744061.

It is a happy number.

It is not a de Polignac number, because 1604473845905 - 2¹² = 1604473841809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 135724895 + ... + 135736715.

It is an arithmetic number, because the mean of its divisors is an integer number (36675390600).

Almost surely, 2^{1604473845905} is an apocalyptic number.

It is an amenable number.

1604473845905 is a deficient number, since it is larger than the sum of its proper divisors (742751152495).

1604473845905 is a wasteful number, since it uses less digits than its factorization.

1604473845905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13530.

The product of its (nonzero) digits is 14515200, while the sum is 56.

The spelling of 1604473845905 in words is "one trillion, six hundred four billion, four hundred seventy-three million, eight hundred forty-five thousand, nine hundred five".