11456919369 has 45 divisors (see below), whose sum is σ = 19920611997. Its totient is φ = 6542957736.

The previous prime is 11456919343. The next prime is 11456919379. The reversal of 11456919369 is 96391965411.

It is a happy number.

The square root of 11456919369 is 107037.

It is a perfect power (a square), and thus also a powerful number.

11456919369 is a `hidden beast` number, since 1 + 1 + 4 + 569 + 19 + 3 + 69 = 666.

It is not a de Polignac number, because 11456919369 - 2¹³ = 11456911177 is a prime.

It is a super-2 number, since 2×11456919369² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11456919319) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 6742482 + ... + 6744180.

Almost surely, 2^11456919369 is an apocalyptic number.

11456919369 is the 107037-th square number.

11456919369 is the 53519-th centered octagonal number.

It is an amenable number.

11456919369 is a deficient number, since it is larger than the sum of its proper divisors (8463692628).

11456919369 is an frugal number, since it uses more digits than its factorization.

11456919369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 1709 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The spelling of 11456919369 in words is "eleven billion, four hundred fifty-six million, nine hundred nineteen thousand, three hundred sixty-nine".