11641264273 has 4 divisors (see below), whose sum is σ = 11641563828. Its totient is φ = 11640964720.

The previous prime is 11641264253. The next prime is 11641264291. The reversal of 11641264273 is 37246214611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4236317569 + 7404946704 = 65087^2 + 86052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11641264273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11641264253) 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, 80938 + ... + 172723.

It is an arithmetic number, because the mean of its divisors is an integer number (2910390957).

Almost surely, 2^11641264273 is an apocalyptic number.

It is an amenable number.

11641264273 is a deficient number, since it is larger than the sum of its proper divisors (299555).

11641264273 is an equidigital number, since it uses as much as digits as its factorization.

11641264273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299554.

The product of its digits is 48384, while the sum is 37.

Adding to 11641264273 its reverse (37246214611), we get a palindrome (48887478884).

The spelling of 11641264273 in words is "eleven billion, six hundred forty-one million, two hundred sixty-four thousand, two hundred seventy-three".