11204538571 has 4 divisors (see below), whose sum is σ = 11590902000. Its totient is φ = 10818175144.

The previous prime is 11204538533. The next prime is 11204538581. The reversal of 11204538571 is 17583540211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17583540211 = 181 ⋅97146631.

It is a cyclic number.

It is not a de Polignac number, because 11204538571 - 2¹⁷ = 11204407499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11204538571.

It is not an unprimeable number, because it can be changed into a prime (11204538581) 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, 193181671 + ... + 193181728.

It is an arithmetic number, because the mean of its divisors is an integer number (2897725500).

Almost surely, 2^11204538571 is an apocalyptic number.

11204538571 is a deficient number, since it is larger than the sum of its proper divisors (386363429).

11204538571 is an equidigital number, since it uses as much as digits as its factorization.

11204538571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386363428.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 11204538571 in words is "eleven billion, two hundred four million, five hundred thirty-eight thousand, five hundred seventy-one".