1604164475872 has 36 divisors (see below), whose sum is σ = 3673823111280. Its totient is φ = 687499060416.

The previous prime is 1604164475869. The next prime is 1604164475891. The reversal of 1604164475872 is 2785744614061.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511530472 + ... + 511533607.

It is an arithmetic number, because the mean of its divisors is an integer number (102050641980).

Almost surely, 2^{1604164475872} is an apocalyptic number.

It is an amenable number.

1604164475872 is an abundant number, since it is smaller than the sum of its proper divisors (2069658635408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1604164475872 is a wasteful number, since it uses less digits than its factorization.

1604164475872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023064103 (or 1023064088 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 1604164475872 in words is "one trillion, six hundred four billion, one hundred sixty-four million, four hundred seventy-five thousand, eight hundred seventy-two".