1004385340720 has 40 divisors (see below), whose sum is σ = 2410524823680. Its totient is φ = 388794324480.

The previous prime is 1004385340697. The next prime is 1004385340729. The reversal of 1004385340720 is 270435834001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1004385340720.

It is not an unprimeable number, because it can be changed into a prime (1004385340729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202494565 + ... + 202499524.

It is an arithmetic number, because the mean of its divisors is an integer number (60263120592).

Almost surely, 2^{1004385340720} is an apocalyptic number.

1004385340720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004385340720 is an abundant number, since it is smaller than the sum of its proper divisors (1406139482960).

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

1004385340720 is a wasteful number, since it uses less digits than its factorization.

1004385340720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404994133 (or 404994127 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 1004385340720 in words is "one trillion, four billion, three hundred eighty-five million, three hundred forty thousand, seven hundred twenty".