1004531555320 has 64 divisors (see below), whose sum is σ = 2334598963200. Its totient is φ = 388602023040.

The previous prime is 1004531555317. The next prime is 1004531555441. The reversal of 1004531555320 is 235551354001.

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, 1684591 + ... + 2201569.

It is an arithmetic number, because the mean of its divisors is an integer number (36478108800).

Almost surely, 2^{1004531555320} is an apocalyptic number.

1004531555320 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 1004531555320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167299481600).

1004531555320 is an abundant number, since it is smaller than the sum of its proper divisors (1330067407880).

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

1004531555320 is a wasteful number, since it uses less digits than its factorization.

1004531555320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518588 (or 518584 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 1004531555320 in words is "one trillion, four billion, five hundred thirty-one million, five hundred fifty-five thousand, three hundred twenty".