11195275205 has 4 divisors (see below), whose sum is σ = 13434330252. Its totient is φ = 8956220160.

The previous prime is 11195275163. The next prime is 11195275207. The reversal of 11195275205 is 50257259111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50257259111 = 479 ⋅104921209.

It can be written as a sum of positive squares in 2 ways, for example, as 8666492836 + 2528782369 = 93094^2 + 50287^2 .

It is not a de Polignac number, because 11195275205 - 2⁶ = 11195275141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11195275207) 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, 1119527516 + ... + 1119527525.

It is an arithmetic number, because the mean of its divisors is an integer number (3358582563).

Almost surely, 2^11195275205 is an apocalyptic number.

It is an amenable number.

11195275205 is a deficient number, since it is larger than the sum of its proper divisors (2239055047).

11195275205 is an equidigital number, since it uses as much as digits as its factorization.

11195275205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239055046.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 11195275205 in words is "eleven billion, one hundred ninety-five million, two hundred seventy-five thousand, two hundred five".