1604144400564 has 48 divisors (see below), whose sum is σ = 3749959100160. Its totient is φ = 533721820800.

The previous prime is 1604144400557. The next prime is 1604144400571. The reversal of 1604144400564 is 4650044414061.

It is an interprime number because it is at equal distance from previous prime (1604144400557) and next prime (1604144400571).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20056357 + ... + 20136179.

It is an arithmetic number, because the mean of its divisors is an integer number (78124147920).

Almost surely, 2^{1604144400564} is an apocalyptic number.

It is an amenable number.

1604144400564 is an abundant number, since it is smaller than the sum of its proper divisors (2145814699596).

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

1604144400564 is a wasteful number, since it uses less digits than its factorization.

1604144400564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82920 (or 82918 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 1604144400564 in words is "one trillion, six hundred four billion, one hundred forty-four million, four hundred thousand, five hundred sixty-four".