1000001011009 has 64 divisors (see below), whose sum is σ = 1359101399040. Its totient is φ = 710506080000.

The previous prime is 1000001010989. The next prime is 1000001011013. The reversal of 1000001011009 is 9001101000001.

1000001011009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1000001011009 - 2²⁷ = 999866793281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1000001011009.

It is not an unprimeable number, because it can be changed into a prime (1000001014009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44372074 + ... + 44394604.

It is an arithmetic number, because the mean of its divisors is an integer number (21235959360).

Almost surely, 2^{1000001011009} is an apocalyptic number.

It is an amenable number.

1000001011009 is a deficient number, since it is larger than the sum of its proper divisors (359100388031).

1000001011009 is a wasteful number, since it uses less digits than its factorization.

1000001011009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23102.

The product of its (nonzero) digits is 9, while the sum is 13.

The spelling of 1000001011009 in words is "one trillion, one million, eleven thousand, nine".