12044709815 has 4 divisors (see below), whose sum is σ = 14453651784. Its totient is φ = 9635767848.

The previous prime is 12044709791. The next prime is 12044709847. The reversal of 12044709815 is 51890744021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51890744021 = 83 ⋅625189687.

It is a cyclic number.

It is not a de Polignac number, because 12044709815 - 2²⁶ = 11977600951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204470977 + ... + 1204470986.

It is an arithmetic number, because the mean of its divisors is an integer number (3613412946).

Almost surely, 2^12044709815 is an apocalyptic number.

12044709815 is a deficient number, since it is larger than the sum of its proper divisors (2408941969).

12044709815 is an equidigital number, since it uses as much as digits as its factorization.

12044709815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408941968.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 12044709815 in words is "twelve billion, forty-four million, seven hundred nine thousand, eight hundred fifteen".