1604446487040 has 320 divisors, whose sum is σ = 5434974889344. Its totient is φ = 402385010688.

The previous prime is 1604446487011. The next prime is 1604446487041. The reversal of 1604446487040 is 407846444061.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1604446487041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213722967 + ... + 213730473.

Almost surely, 2^{1604446487040} is an apocalyptic number.

1604446487040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604446487040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2717487444672).

1604446487040 is an abundant number, since it is smaller than the sum of its proper divisors (3830528402304).

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

1604446487040 is a wasteful number, since it uses less digits than its factorization.

1604446487040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187 (or 9171 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 48.

The spelling of 1604446487040 in words is "one trillion, six hundred four billion, four hundred forty-six million, four hundred eighty-seven thousand, forty".