11071909001 has 4 divisors (see below), whose sum is σ = 11341955604. Its totient is φ = 10801862400.

The previous prime is 11071908977. The next prime is 11071909003. The reversal of 11071909001 is 10090917011.

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 1646411776 + 9425497225 = 40576^2 + 97085^2 .

It is a cyclic number.

It is not a de Polignac number, because 11071909001 - 2¹⁸ = 11071646857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11071909003) 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, 135023240 + ... + 135023321.

It is an arithmetic number, because the mean of its divisors is an integer number (2835488901).

Almost surely, 2^11071909001 is an apocalyptic number.

It is an amenable number.

11071909001 is a deficient number, since it is larger than the sum of its proper divisors (270046603).

11071909001 is an equidigital number, since it uses as much as digits as its factorization.

11071909001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270046602.

The product of its (nonzero) digits is 567, while the sum is 29.

The spelling of 11071909001 in words is "eleven billion, seventy-one million, nine hundred nine thousand, one".