12047445305 has 8 divisors (see below), whose sum is σ = 16522210752. Its totient is φ = 8261105328.

The previous prime is 12047445259. The next prime is 12047445341. The reversal of 12047445305 is 50354474021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12047445305 - 2¹² = 12047441209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 344212723 = 12047445305 / (1 + 2 + 0 + 4 + 7 + 4 + 4 + 5 + 3 + 0 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172106327 + ... + 172106396.

It is an arithmetic number, because the mean of its divisors is an integer number (2065276344).

Almost surely, 2^12047445305 is an apocalyptic number.

It is an amenable number.

12047445305 is a deficient number, since it is larger than the sum of its proper divisors (4474765447).

12047445305 is an equidigital number, since it uses as much as digits as its factorization.

12047445305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344212735.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 12047445305 in words is "twelve billion, forty-seven million, four hundred forty-five thousand, three hundred five".