1002000010985 has 4 divisors (see below), whose sum is σ = 1202400013188. Its totient is φ = 801600008784.

The previous prime is 1002000010919. The next prime is 1002000011017. The reversal of 1002000010985 is 5890100002001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 531903286489 + 470096724496 = 729317^2 + 685636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002000010985 - 2¹⁰ = 1002000009961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100200001094 + ... + 100200001103.

It is an arithmetic number, because the mean of its divisors is an integer number (300600003297).

Almost surely, 2^{1002000010985} is an apocalyptic number.

It is an amenable number.

1002000010985 is a deficient number, since it is larger than the sum of its proper divisors (200400002203).

1002000010985 is an equidigital number, since it uses as much as digits as its factorization.

1002000010985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200400002202.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 1002000010985 its reverse (5890100002001), we get a palindrome (6892100012986).

The spelling of 1002000010985 in words is "one trillion, two billion, ten thousand, nine hundred eighty-five".