2003981761872 has 40 divisors (see below), whose sum is σ = 5752169873280. Its totient is φ = 667993920480.

The previous prime is 2003981761849. The next prime is 2003981761877. The reversal of 2003981761872 is 2781671893002.

It is a happy number.

2003981761872 is a `hidden beast` number, since 2 + 0 + 0 + 3 + 9 + 8 + 17 + 618 + 7 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003981761877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319422904 + ... + 2319423767.

It is an arithmetic number, because the mean of its divisors is an integer number (143804246832).

Almost surely, 2^{2003981761872} is an apocalyptic number.

It is an amenable number.

2003981761872 is an abundant number, since it is smaller than the sum of its proper divisors (3748188111408).

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

2003981761872 is a wasteful number, since it uses less digits than its factorization.

2003981761872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638846688 (or 4638846676 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 2003981761872 in words is "two trillion, three billion, nine hundred eighty-one million, seven hundred sixty-one thousand, eight hundred seventy-two".