1011001000985 has 4 divisors (see below), whose sum is σ = 1213201201188. Its totient is φ = 808800800784.

The previous prime is 1011001000973. The next prime is 1011001001029. The reversal of 1011001000985 is 5890001001101.

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 212951792089 + 798049208896 = 461467^2 + 893336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011001000985 - 2¹⁰ = 1011000999961 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, 101100100094 + ... + 101100100103.

It is an arithmetic number, because the mean of its divisors is an integer number (303300300297).

Almost surely, 2^{1011001000985} is an apocalyptic number.

It is an amenable number.

1011001000985 is a deficient number, since it is larger than the sum of its proper divisors (202200200203).

1011001000985 is an equidigital number, since it uses as much as digits as its factorization.

1011001000985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202200200202.

The product of its (nonzero) digits is 360, while the sum is 26.

The spelling of 1011001000985 in words is "one trillion, eleven billion, one million, nine hundred eighty-five", and thus it is an aban number.