12072447337 has 4 divisors (see below), whose sum is σ = 12782591316. Its totient is φ = 11362303360.

The previous prime is 12072447313. The next prime is 12072447379. The reversal of 12072447337 is 73374427021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10737933376 + 1334513961 = 103624^2 + 36531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12072447337 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 12072447337.

It is not an unprimeable number, because it can be changed into a prime (12072447637) 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, 355071964 + ... + 355071997.

It is an arithmetic number, because the mean of its divisors is an integer number (3195647829).

Almost surely, 2^12072447337 is an apocalyptic number.

12072447337 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12072447337 is a deficient number, since it is larger than the sum of its proper divisors (710143979).

12072447337 is an equidigital number, since it uses as much as digits as its factorization.

12072447337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710143978.

The product of its (nonzero) digits is 197568, while the sum is 40.

The spelling of 12072447337 in words is "twelve billion, seventy-two million, four hundred forty-seven thousand, three hundred thirty-seven".