11235478819 has 4 divisors (see below), whose sum is σ = 11236080240. Its totient is φ = 11234877400.

The previous prime is 11235478781. The next prime is 11235478853. The reversal of 11235478819 is 91887453211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91887453211 = 317 ⋅289865783.

It is a cyclic number.

It is not a de Polignac number, because 11235478819 - 2⁹ = 11235478307 is a prime.

It is a super-2 number, since 2×11235478819² (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 (11235478879) 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, 271759 + ... + 310360.

It is an arithmetic number, because the mean of its divisors is an integer number (2809020060).

Almost surely, 2^11235478819 is an apocalyptic number.

11235478819 is a deficient number, since it is larger than the sum of its proper divisors (601421).

11235478819 is an equidigital number, since it uses as much as digits as its factorization.

11235478819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601420.

The product of its digits is 483840, while the sum is 49.

The spelling of 11235478819 in words is "eleven billion, two hundred thirty-five million, four hundred seventy-eight thousand, eight hundred nineteen".