11053671509 has 4 divisors (see below), whose sum is σ = 11053881804. Its totient is φ = 11053461216.

The previous prime is 11053671479. The next prime is 11053671521. The reversal of 11053671509 is 90517635011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5296200625 + 5757470884 = 72775^2 + 75878^2 .

It is a cyclic number.

It is not a de Polignac number, because 11053671509 - 2¹² = 11053667413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11053671539) 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, 50339 + ... + 156975.

It is an arithmetic number, because the mean of its divisors is an integer number (2763470451).

Almost surely, 2^11053671509 is an apocalyptic number.

It is an amenable number.

11053671509 is a deficient number, since it is larger than the sum of its proper divisors (210295).

11053671509 is a wasteful number, since it uses less digits than its factorization.

11053671509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210294.

The product of its (nonzero) digits is 28350, while the sum is 38.

The spelling of 11053671509 in words is "eleven billion, fifty-three million, six hundred seventy-one thousand, five hundred nine".