2001002010989 has 4 divisors (see below), whose sum is σ = 2001509497056. Its totient is φ = 2000494524924.

The previous prime is 2001002010979. The next prime is 2001002011003. The reversal of 2001002010989 is 9890102001002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001002010989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001002010979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253737119 + ... + 253745004.

It is an arithmetic number, because the mean of its divisors is an integer number (500377374264).

Almost surely, 2^{2001002010989} is an apocalyptic number.

It is an amenable number.

2001002010989 is a deficient number, since it is larger than the sum of its proper divisors (507486067).

2001002010989 is an equidigital number, since it uses as much as digits as its factorization.

2001002010989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507486066.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 2001002010989 in words is "two trillion, one billion, two million, ten thousand, nine hundred eighty-nine".