2001043616020 has 12 divisors (see below), whose sum is σ = 4202191593684. Its totient is φ = 800417446400.

The previous prime is 2001043616003. The next prime is 2001043616057. The reversal of 2001043616020 is 206163401002.

It can be written as a sum of positive squares in 2 ways, for example, as 979755510276 + 1021288105744 = 989826^2 + 1010588^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50026090381 + ... + 50026090420.

It is an arithmetic number, because the mean of its divisors is an integer number (350182632807).

Almost surely, 2^{2001043616020} is an apocalyptic number.

2001043616020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001043616020 is an abundant number, since it is smaller than the sum of its proper divisors (2201147977664).

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

2001043616020 is a wasteful number, since it uses less digits than its factorization.

2001043616020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100052180810 (or 100052180808 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 2001043616020 in words is "two trillion, one billion, forty-three million, six hundred sixteen thousand, twenty".