11964515219 has 4 divisors (see below), whose sum is σ = 11991769680. Its totient is φ = 11937260760.

The previous prime is 11964515207. The next prime is 11964515243. The reversal of 11964515219 is 91251546911.

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

It is a cyclic number.

It is not a de Polignac number, because 11964515219 - 2⁴ = 11964515203 is a prime.

It is a super-2 number, since 2×11964515219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11964515219.

It is not an unprimeable number, because it can be changed into a prime (11964515279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13626572 + ... + 13627449.

It is an arithmetic number, because the mean of its divisors is an integer number (2997942420).

Almost surely, 2^11964515219 is an apocalyptic number.

11964515219 is a deficient number, since it is larger than the sum of its proper divisors (27254461).

11964515219 is an equidigital number, since it uses as much as digits as its factorization.

11964515219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27254460.

The product of its digits is 97200, while the sum is 44.

The spelling of 11964515219 in words is "eleven billion, nine hundred sixty-four million, five hundred fifteen thousand, two hundred nineteen".