2001383789904 has 160 divisors (see below), whose sum is σ = 5761198402560. Its totient is φ = 665216053632.

The previous prime is 2001383789887. The next prime is 2001383789941. The reversal of 2001383789904 is 4099873831002.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276316107 + ... + 276323349.

It is an arithmetic number, because the mean of its divisors is an integer number (36007490016).

Almost surely, 2^{2001383789904} is an apocalyptic number.

2001383789904 is a gapful number since it is divisible by the number (24) 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 2001383789904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2880599201280).

2001383789904 is an abundant number, since it is smaller than the sum of its proper divisors (3759814612656).

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

2001383789904 is a wasteful number, since it uses less digits than its factorization.

2001383789904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9006 (or 8994 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 2001383789904 in words is "two trillion, one billion, three hundred eighty-three million, seven hundred eighty-nine thousand, nine hundred four".