11573500011 has 4 divisors (see below), whose sum is σ = 15431333352. Its totient is φ = 7715666672.

The previous prime is 11573499943. The next prime is 11573500033. The reversal of 11573500011 is 11000537511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11000537511 = 3 ⋅3666845837.

It is a cyclic number.

It is not a de Polignac number, because 11573500011 - 2¹⁴ = 11573483627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11573502011) 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, 1928916666 + ... + 1928916671.

It is an arithmetic number, because the mean of its divisors is an integer number (3857833338).

Almost surely, 2^11573500011 is an apocalyptic number.

11573500011 is a deficient number, since it is larger than the sum of its proper divisors (3857833341).

11573500011 is an equidigital number, since it uses as much as digits as its factorization.

11573500011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857833340.

The product of its (nonzero) digits is 525, while the sum is 24.

The spelling of 11573500011 in words is "eleven billion, five hundred seventy-three million, five hundred thousand, eleven".