11278944769 has 4 divisors (see below), whose sum is σ = 11769333696. Its totient is φ = 10788555844.

The previous prime is 11278944751. The next prime is 11278944773. The reversal of 11278944769 is 96744987211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96744987211 = 67 ⋅1443955033.

It is a cyclic number.

It is not a de Polignac number, because 11278944769 - 2¹¹ = 11278942721 is a prime.

It is a super-2 number, since 2×11278944769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11278944169) 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, 245194429 + ... + 245194474.

It is an arithmetic number, because the mean of its divisors is an integer number (2942333424).

Almost surely, 2^11278944769 is an apocalyptic number.

It is an amenable number.

11278944769 is a deficient number, since it is larger than the sum of its proper divisors (490388927).

11278944769 is an equidigital number, since it uses as much as digits as its factorization.

11278944769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490388926.

The product of its digits is 6096384, while the sum is 58.

The spelling of 11278944769 in words is "eleven billion, two hundred seventy-eight million, nine hundred forty-four thousand, seven hundred sixty-nine".