11270774561 has 4 divisors (see below), whose sum is σ = 11342563092. Its totient is φ = 11198986032.

The previous prime is 11270774549. The next prime is 11270774587. The reversal of 11270774561 is 16547707211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16547707211 = 7 ⋅2363958173.

It can be written as a sum of positive squares in 2 ways, for example, as 1294560400 + 9976214161 = 35980^2 + 99881^2 .

It is a cyclic number.

It is not a de Polignac number, because 11270774561 - 2⁶ = 11270774497 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 (11270774531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35894030 + ... + 35894343.

It is an arithmetic number, because the mean of its divisors is an integer number (2835640773).

Almost surely, 2^11270774561 is an apocalyptic number.

It is an amenable number.

11270774561 is a deficient number, since it is larger than the sum of its proper divisors (71788531).

11270774561 is an equidigital number, since it uses as much as digits as its factorization.

11270774561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71788530.

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 11270774561 in words is "eleven billion, two hundred seventy million, seven hundred seventy-four thousand, five hundred sixty-one".